Shelly m odule X3_ELE GRP datasheet
Datasheet version 2
Hardware version v011
Shelly m odule X 3_ELEGRP datasheet
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Table of contents
Features ......................................................................................................................................................... 4
Module overview .............................................................................................................................................. 5
IO layout ......................................................................................................................................................... 5
Module dimensions ..................................................................................................................................... 6
Electrical Characteristics .............................................................................................................................. 7
Absolute Maximum Ratings ...................................................................................................................... 7
Recommended Operating Conditions .................................................................................................... 7
DC Characteristics (3.3 V, 25 °C) ............................................................................................................. 8
Current Consumption Characteristics ....................................................................................................... 9
Current Consumption in Active Mode .................................................................................................... 9
Wi-Fi (2.4 GHz) in Active Mode .............................................................................................................. 9
Bluetooth LE in Active Mode .................................................................................................................. 9
Current Consumption in Other Modes ................................................................................................. 10
Modem sleep mode ............................................................................................................................... 10
Low power modes .................................................................................................................................. 10
RF Characteristics .......................................................................................................................................... 11
Wi-Fi Radio .................................................................................................................................................... 11
Wi-Fi RF Transmitter (TX) Characteristics ........................................................................................... 12
TX Power with Spectral Mask and EVM Meeting 802.11 Standards ............................................. 12
TX EVM Test ............................................................................................................................................. 12
Wi-Fi RF Receiver (RX) Characteristics ................................................................................................ 13
RX Sensitivity ........................................................................................................................................... 13
Maximum RX level ................................................................................................................................... 14
RX Adjacent channel rejection ............................................................................................................ 14
Bluetooth 5 (LE) Radio .................................................................................................................................. 15
Bluetooth LE RF Transmitter (TX) Characteristics ............................................................................ 15
Bluetooth LE RF Characteristics ......................................................................................................... 15
Bluetooth LE - Transmitter Characteristics - 1 Mbps ..................................................................... 15
Bluetooth LE - Transmitter Characteristics - 2 Mbps .................................................................... 15
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Bluetooth LE - Transmitter Characteristics - 125 Kbps ................................................................. 16
Bluetooth LE - Transmitter Characteristics - 500 Kbps ................................................................ 16
Bluetooth LE RF Receiver (RX) Characteristics ................................................................................... 17
Bluetooth LE - Receiver Characteristics - 1 Mbps ........................................................................... 17
Bluetooth LE - Receiver Characteristics - 2 Mbps .......................................................................... 17
Bluetooth LE - Receiver Characteristics - 125 Kbps ...................................................................... 18
Bluetooth LE - Receiver Characteristics - 500 Kbps ..................................................................... 19
Revision history .......................................................................................................................................... 19
List of Tables
Table 1: Absolute Maximum Ratings ............................................................................................................................. 7
Table 2: Recommended Operating Conditions ......................................................................................................... 7
Table 3: DC Characteristics (3.3 V, 25 °C) .................................................................................................................. 8
Table 4: Current Consumption for Wi -Fi (2.4 GHz) in Active Mode ..................................................................... 9
Table 5: Current Consumption for Bluetooth LE in Active Mode ......................................................................... 9
Table 6: Current Consumption in Modem -sleep Mode ......................................................................................... 10
Table 7: Current Consumption in Low -Power Modes ............................................................................................ 10
Table 8: Wi -Fi RF Characteristics ................................................................................................................................ 11
Table 9: TX Power with Spectral Mask and EVM Meeting 802.11 Standards ..................................................... 12
Table 10: TX EVM Test
1
................................................................................................................................................... 12
Table 11: RX Sensitivity ................................................................................................................................................... 14
Table 12: Maximum RX Level ......................................................................................................................................... 14
Table 13: RX Adjacent Channel Rejection ................................................................................................................. 14
Table 14: Bluetooth LE RF Characteristics ................................................................................................................ 15
Table 15: Bluetooth LE - Transmitter Characteristics - 1 Mbps ............................................................................ 15
Table 16: Bluetooth LE - Transmitter Characteristics - 2 Mbps .......................................................................... 16
Table 17: Bluetooth LE - Transmitter Characteristics - 125 Kbps ........................................................................ 16
Table 18: Bluetooth LE - Transmitter Characteristics - 500 Kbps ...................................................................... 16
Table 19: Bluetooth LE - Receiver Characteristics - 1 Mbps ................................................................................. 17
Table 20: Bluetooth LE - Receiver Characteristics - 2 Mbps ................................................................................ 18
Table 21: Bluetooth LE - Receiver Characteristics - 125 Kbps .............................................................................. 18
Table 22: Bluetooth LE - Receiver Characteristics - 500 Kbps ........................................................................... 19
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Features
CPU and On -Chip Memory
▪ ESP32 -C3 embedded, 32 -bit RISC -V single -core
processor, up to 160 MHz
▪ 384 KB ROM
▪ 400 KB SRAM (16 KB for cache)
▪ 8 KB SRAM in RTC
▪ 8 MB flash in chip package
The flash is integrated into the chip’s package.
Flash supports more than 100,000
program/erase cycles and more than 20 years
data retention time.
Wi-Fi
▪ IEEE 802.11 b/g/n -compliant
▪ Center frequency range of operating channel:
2412 ~ 2484 MHz
▪ Supports 20 MHz, 40 MHz bandwidth
in 2.4 GHz band
▪ 1T1R mode with data rate up to 150 Mbps
▪ Simultaneous support for Infrastructure BSS in
Station mode, SoftAP mode, Station + SoftAP
mode, and promiscuous mode
Note that when the chip scans in Station mode,
the SoftAP channel will change along with the
Station channel
Bluetooth®
▪ Bluetooth LE
▪ Internal co -existence mechanism between Wi -Fi
and Bluetooth to share the same antenna
▪ Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
▪ Advertising extensions
▪ Multiple advertisement sets
▪ Channel selection algorithm #2
Peripherals
▪ Up to 6 digital inputs or outputs , usable by the
firmware platform
▪ Support for UART communication via JS
interface, more protocols will be supported in
the future
▪ Temperature & humidity sensor support -
DS18B20 & DHT22
Integrated Components on Module
▪ 40 MHz crystal oscillator
Antenna
▪ On-board PCB antenna
Operating conditions
▪ Operating voltage: Power supply: 3.0~ 3.6 V DC
▪ Operating ambient temperature: –40 °C ~ 105 °C
Ambient temperature specifies the
recommended temperature range of the
environment immediately outside the Shelly
module.
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Module overview
IO layout
Keep out zone
The exact dimesions are marked in the Module dimesnion s drawing .
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Module dimensions
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Electrical Characteristics
Absolute Maximum Ratings
Stresses above those listed in Table 1 Absolute Maximum Ratings may cause permanent
damage to the device. These are stress ratings only and functional operation of the device at
these or any other conditions beyond those indicated under Table 2 Recommended Operating
Conditions is not implied. Exposure to absolute -maximum -rated conditions for extended
periods may affect device reliability.
Symbol
Parameter
Min
Max
Unit
VDD33
Power supply voltage
-0.3
3.6
V
TSTORE
Storage temperature
–40
105
°C
Table 1: Absolute Maximum Ratings
Recommended Operating Conditions
Symbol
Parameter
Min
Typ .
Max
Unit
VDD33
Power supply voltage
3.0
3.3
3.6
V
I
VDD
Current delivered by external power supply min
0.5
—
—
A
T
A
Operating ambient temperature
–40
—
105
°C
Table 2: Recommended Operating Conditions
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DC Characteristics (3.3 V, 25 °C)
Symbol
Parameter
Min
Typ .
Max
Unit
C
IN
Pin capacitance
—
2
—
pF
V
IH
High -level input voltage
0.75 × VDD
1
—
VDD
1
+ 0.3
V
V
IL
Low -level input voltage
–0.3
—
0.25 × VDD
1
V
I
IH
High -level input current
—
—
50
nA
I
IL
Low -level input current
—
—
50
nA
V
OH
2
High -level output voltage
0.8 × VDD
1
—
—
V
V
OL
2
Low -level output voltage
—
—
0.1 × VDD
1
V
I
OH
High -level source current (VDD
1
= 3.3 V,
V
OH
>= 2.64 V, PAD_DRIVER = 3)
—
40
—
mA
I
OL
Low -level sink current (VDD
1
= 3.3 V, V
OL
=0.495 V, PAD_DRIVER = 3)
—
28
—
mA
R
PU
Pull-up resistor
—
45
—
kΩ
R
PD
Pull-down resistor
—
45
—
kΩ
V
IH_ nRST
Chip reset release voltage
0.75 × VDD
1
—
VDD
1
+ 0.3
V
V
IL_ nRST
Chip reset voltage
–0.3
—
0.25 × VDD
1
V
Table 3: DC Characteristics (3.3 V, 25 °C)
1
VDD is the I/O voltage for pins of a particular power domain.
2
VOH and VOL are measured using high - impedance load.
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Current Consumption Characteristics
Current Consumption in Active Mode
The current consumption measurements are taken with a 3.3 V supply at 25 °C ambient
temperature.
TX current consumption is rated at a 100% duty cycle.
RX current consumption is rated when the peripherals are disabled and the CPU idle.
Wi-Fi (2.4 GHz) in Active Mode
Work mode
Description
Peak (mA)
Active (RF working)
TX
802.11b, 1 Mbps,
350
802.11g, 54 Mbps, @18 dBm
295
802.11n, HT20, MCS7, @17.5 dBm
290
802.11n, HT40, MCS7, @17 dBm
290
RX
802.11b/g/n, HT20
82
802.11n, HT40
84
Table 4: Current Consumption for Wi - Fi (2.4 GHz) in Active Mode
Bluetooth LE in Active Mode
Work Mode
RF Condition
Description
Peak (mA)
Active (RF working)
TX
340
Bluetooth LE @ 9.0 dBm
190
Bluetooth LE 0 dBm
170
Bluetooth LE @ –15.0 dBm
100
RX
Bluetooth LE
86
Table 5: Current Consumption for Bluetooth LE in Active Mode
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Current Consumption in Other Modes
Modem sleep mode
Mode
CPU Frequency
(MHz)
Description
Typ
All Peripherals
Clocks Disabled
(mA)
All Peripherals
Clocks Enabled
(mA)
1
Modem -sleep
2,3
160
CPU is idle
16
21
CPU is running
23
28
80
CPU is idle
13
18
CPU is running
17
22
Table 6: Current Consumption in Modem -sleep Mode
1
In practice, the current consumption might be different depending on which peripherals are enabled.
2
In Modem - sleep mode, Wi -Fi is clock gated.
3
In Modem -sleep mode, the consumption might be higher when accessing flash. For a flash rated at 80 Mbit/s,
in SPI 2 - line mode the consumption is 10 mA.
Low power modes
Mode
Description
Typ (µA)
Light -sleep
VDD_SPI and Wi -Fi are powered down, and all GPIOs are
high -impedance
130
Deep -sleep
RTC timer + RTC memory
5
Power off
CHIP_EN is set to low level, the chip is powered off
1
Table 7: Current Consumption in Low - Power Modes
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RF Characteristics
The RF data is measured at the antenna port, where RF cable is connected, including the
front -end loss. The external antennas used for the tests on the modules with external
antenna connectors have an impedance of 50 Ω.
Devices should operate in the center frequency range allocated by regional regulatory
authorities.
Unless otherwise stated, the RF tests are conducted with a 3.3 V (±5%) supply at 25
0
C
ambient temperature.
Wi-Fi Radio
Name
Description
Center frequency range of operating channel
Wi-Fi wireless standard
IEEE 802.11b/g/n
Table 8: Wi- Fi RF Characteristics
2412-2462MHz
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Wi-Fi RF Transmitter (TX) Characteristics
TX Power with Spectral Mask and EVM Meeting 802.11 Standards
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Wi-Fi RF Receiver (RX) Characteristics
For RX tests, the PER (packet error rate) limit is 8% for 802.11b, and 10% for 802.11g/n.
RX Sensitivity
Rate
Min (dBm)
Typ (dBm)
Max (dBm)
802.11b, 1 Mbps
—
–98.0
—
802.11b, 2 Mbps
—
–96.0
—
802.11b, 5.5 Mbps
—
–93.0
—
802.11b, 11 Mbps
—
–88.6
—
802.11g, 6 Mbps
—
–92.8
—
802.11g, 9 Mbps
—
–91.8
—
802.11g, 12 Mbps
—
–90.8
—
802.11g, 18 Mbps
—
–88.4
—
802.11g, 24 Mbps
—
–85.4
—
802.11g, 36 Mbps
—
–82.0
—
802.11g, 48 Mbps
—
–77.8
—
802.11g, 54 Mbps
—
–76.2
—
802.11n, HT20, MCS0
—
–92.6
—
802.11n, HT20, MCS1
—
–90.6
—
802.11n, HT20, MCS2
—
–88.0
—
802.11n, HT20, MCS3
—
–84.8
—
802.11n, HT20, MCS4
—
–81.6
—
802.11n, HT20, MCS5
—
–77.4
—
802.11n, HT20, MCS6
—
–75.6
—
802.11n, HT20, MCS7
—
–74.4
—
802.11n, HT40, MCS0
—
–90.0
—
802.11n, HT40, MCS1
—
–87.6
—
802.11n, HT40, MCS2
—
–84.8
—
802.11n, HT40, MCS3
—
–81.8
—
802.11n, HT40, MCS4
—
–78.4
—
802.11n, HT40, MCS5
—
–74.2
—
802.11n, HT40, MCS6
—
–72.6
—
802.11n, HT40, MCS7
—
–71.2
—
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Table 11: RX Sensitivity
Maximum RX level
Rate
Min (dBm)
Typ (dBm)
Max (dBm)
802.11b, 1 Mbps
—
5
—
802.11b, 11 Mbps
—
5
—
802.11g, 6 Mbps
—
5
—
802.11g, 54 Mbps
—
0
—
802.11n, HT20, MCS0
—
5
—
802.11n, HT20, MCS7
—
0
—
802.11n, HT40, MCS0
—
5
—
802.11n, HT40, MCS7
—
0
—
Table 12: Maximum RX Level
RX Adjacent channel rejection
Rate
Min (dB)
Typ (dB)
Max (dB)
802.11b, 1 Mbps
—
35
—
802.11b, 11 Mbps
—
35
—
802.11g, 6 Mbps
—
31
—
802.11g, 54 Mbps
—
14
—
802.11n, HT20, MCS0
—
31
—
802.11n, HT20, MCS7
—
13
—
802.11n, HT40, MCS0
—
19
—
802.11n, HT40, MCS7
—
8
—
Table 13: RX Adjacent Channel Rejection
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Bluetooth 5 (LE) Radio
Bluetooth LE RF Transmitter (TX) Characteristics
Bluetooth LE RF Characteristics
Name
Description
Center frequency range of operating channel
2402 ~ 2480 MHz
Table 14: Bluetooth LE RF Characteristics
Bluetooth LE - Transmitter Characteristics - 1 Mbps
Parameter
Description
Min
Typ
Max
Unit
In-band emissions
F = F0 ± 2 MHz
—
–37.62
—
dBm
F = F0 ± 3 MHz
—
–41.95
—
dBm
F = F0 ± > 3 MHz
—
–44.48
—
dBm
Modulation characteristics
∆ f 1
avg
—
245.00
—
kHz
∆ f 2
max
—
208.00
—
kHz
∆ f 2
avg
/∆ f 1
avg
—
0.93
—
—
Carrier frequency offset
—
—
–9.00
—
kHz
Carrier frequency drift
|
f
0
− f
n
|
n=2,3,4,…k
—
1.17
—
kHz
|
f
1
− 𝑓
0
|
—
0.30
—
kHz
|
f
n
− f
n−5
|
n=6,7,8,…k
—
4.90
—
kHz
Table 15: Bluetooth LE - Transmitter Characteristics - 1 Mbps
Bluetooth LE - Transmitter Characteristics - 2 Mbps
Parameter
Description
Min
Typ
Max
Unit
In-band emissions
F = F0 ± 4 MHz
—
–43.55
—
dBm
F = F0 ± 5 MHz
—
–45.26
—
dBm
F = F0 ± > 5 MHz
—
–47.00
—
dBm
Modulation characteristics
∆ f 1
avg
—
497.00
—
kHz
∆ f 2
max
—
398.00
—
kHz
∆ f 2
avg
/∆ f 1
avg
—
0.95
—
—
Carrier frequency offset
—
—
–9.00
—
kHz
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Carrier frequency drift
|
f
0
− f
n
|
n=2,3,4,…k
—
0.46
—
kHz
|
𝑓
1
− 𝑓
0
|
—
0.70
—
kHz
|
𝑓
𝑛
− 𝑓
𝑛−5
|
𝑛=6,7,8,…𝑘
—
6.80
—
kHz
Table 16: Bluetooth LE - Transmitter Characteristics - 2 Mbps
Bluetooth LE - Transmitter Characteristics - 125 Kbps
Parameter
Description
Min
Typ
Max
Unit
In-band emissions
F = F0 ± 2 MHz
—
–37.90
—
dBm
F = F0 ± 3 MHz
—
–41.00
—
dBm
F = F0 ± > 3 MHz
—
–42.50
—
dBm
Modulation characteristics
∆ f 1
avg
—
252.00
—
kHz
∆ f 1
max
—
200.00
—
kHz
Carrier frequency offset
—
—
–13.70
—
kHz
Carrier frequency drift
|
f
0
− f
n
|
n=1,2,3,…k
—
1.52
—
kHz
|
𝑓
0
− 𝑓
3
|
—
0.65
—
kHz
|
𝑓
𝑛
− 𝑓
𝑛−3
|
𝑛=7,8,9,…𝑘
—
0.70
—
kHz
Table 17: Bluetooth LE - Transmitter Characteristics - 125 Kbps
Bluetooth LE - Transmitter Characteristics - 500 Kbps
Parameter
Description
Min
Typ
Max
Unit
In-band emissions
F = F0 ± 2 MHz
—
–37.90
—
dBm
F = F0 ± 3 MHz
—
–41.30
—
dBm
F = F0 ± > 3 MHz
—
–42.80
—
dBm
Modulation characteristics
∆ f 2
avg
—
220.00
—
kHz
∆ f 2
max
—
205.00
—
kHz
Carrier frequency offset
—
—
–11.90
—
kHz
Carrier frequency drift
|
f
0
− f
n
|
n=1,2,3,…k
—
1.37
—
kHz
|
𝑓
0
− 𝑓
3
|
—
1.09
—
kHz
|
𝑓
𝑛
− 𝑓
𝑛−3
|
𝑛=7,8,9,…𝑘
—
0.51
—
kHz
Table 18: Bluetooth LE - Transmitter Characteristics - 500 Kbps
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Bluetooth LE RF Receiver (RX) Characteristics
Bluetooth LE - Receiver Characteristics - 1 Mbps
Parameter
Description
Min
Typ
Max
Unit
Sensitivity @30.8% PER
—
—
–96
—
dBm
Maximum received signal @30.8% PER
—
—
10
—
dBm
Co -channel C/I
—
—
8
—
dB
Adjacent channel selectivity C/I
F = F0 + 1 MHz
—
–4
—
dB
F = F0 – 1 MHz
—
–3
—
dB
F = F0 + 2 MHz
—
–32
—
dB
F = F0 – 2 MHz
—
–36
—
dB
F
≥
F0 + 3 MHz
(1)
—
—
—
dB
F
≤
F0 – 3 MHz
—
–39
—
dB
Image frequency
—
—
–29
—
dB
Adjacent channel to image frequency
F = F
image
+ 1 MHz
—
–38
—
dB
F = F
image
– 1 MHz
—
–34
—
dB
Out -of-band blocking performance
30 MHz ~ 2000 MHz
—
–9
—
dBm
2003 MHz ~ 2399 MHz
—
–18
—
dBm
2484 MHz ~ 2997 MHz
—
–16
—
dBm
3000 MHz ~ 12.75 GHz
—
–6
—
dBm
Intermodulation
—
—
–44
—
dBm
Table 19: Bluetooth LE - Receiver Characteristics - 1 Mbps
1
Refer to the value of Adjacent channel to image frequency when F = F
image
– 1 MHz.
Bluetooth LE - Receiver Characteristics - 2 Mbps
Parameter
Description
Min
Typ
Max
Unit
Sensitivity @30.8% PER
—
—
–93
—
dBm
Maximum received signal @30.8% PER
—
—
0
—
dBm
Co -channel C/I
—
—
10
—
dB
Adjacent channel selectivity C/I
F = F0 + 2 MHz
—
–7
—
dB
F = F0 – 2 MHz
—
–7
—
dB
F = F0 + 4 MHz
(1)
—
—
—
dB
F = F0 – 4 MHz
—
–34
—
dB
F
≥
F0 + 6 MHz
—
–39
—
dB
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F
≤
F0 – 6 MHz
—
–39
—
dB
Image frequency
—
—
–27
—
dB
Adjacent channel to image frequency
F = F
image
+ 2 MHz
—
–39
—
dB
F = F
image
– 2 MHz
(2)
—
—
—
dB
Out -of-band blocking performance
30 MHz ~ 2000 MHz
—
–17
—
dBm
2003 MHz ~ 2399 MHz
—
–19
—
dBm
2484 MHz ~ 2997 MHz
—
–16
—
dBm
3000 MHz ~ 12.75 GHz
—
–22
—
dBm
Intermodulation
—
—
–40
—
dBm
Table 2 0: Bluetooth LE - Receiver Characteristics - 2 Mbps
1
Refer to the value of Image frequency.
2
Refer to the value of Adjacent channel selectivity C/I when F = F0 + 2 MHz.
Bluetooth LE - Receiver Characteristics - 125 Kbps
Parameter
Description
Min
Typ
Max
Unit
Sensitivity @30.8% PER
—
—
–104
—
dBm
Maximum received signal @30.8% PER
—
—
10
—
dBm
Co -channel C/I
—
—
2
—
dB
Adjacent channel selectivity C/I
F = F0 + 1 MHz
—
–6
—
dB
F = F0 – 1 MHz
—
–5
—
dB
F = F0 + 2 MHz
—
–40
—
dB
F = F0 – 2 MHz
—
–42
—
dB
F
≥
F0 + 3 MHz
(1)
—
—
—
dB
F
≤
F0 – 3 MHz
—
–46
—
dB
Image frequency
—
—
–34
—
dB
Adjacent channel to image frequency
F = F
image
+ 1 MHz
—
–44
—
dB
F = F
image
– 1 MHz
—
–37
—
dB
Table 2 1: Bluetooth LE - Receiver Characteristics - 125 Kbps
1
Refer to the value of Adjacent channel to image frequency when F = F
image
– 1 MHz.
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Bluetooth LE - Receiver Characteristics - 500 Kbps
Parameter
Description
Min
Typ
Max
Unit
Sensitivity @30.8% PER
—
—
–99
—
dBm
Maximum received signal @30.8% PER
—
—
10
—
dBm
Co -channel C/I
—
—
3
—
dB
Adjacent channel selectivity C/I
F = F0 + 1 MHz
—
–5
—
dB
F = F0 – 1 MHz
—
–7
—
dB
F = F0 + 2 MHz
—
–39
—
dB
F = F0 – 2 MHz
—
–40
—
dB
F ≥ F0 + 3 MHz
(1)
—
—
—
dB
F ≤ F0 – 3 MHz
—
–40
—
dB
Image frequency
—
—
–34
—
dB
Adjacent channel to image frequency
F = F
image
+ 1 MHz
—
–43
—
dB
F = F
image
– 1 MHz
—
–38
—
dB
Table 2 2: Bluetooth LE - Receiver Characteristics - 500 Kbps
1
Refer to the value of Adjacent channel to image frequency when F = F
image
– 1 MHz.
Revision history
Date
Version
Release notes
11-21-2025
V1
1. First version created.
04 -15-2026
V2
1. Dimension drawings updated to show the shield
added to th e module.
FCC WARNING
FCC Caution: Any changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
This device and its antenna(s) must not be co-located or operating in conjunction
with any other antenna or transmitter.
15.105 Information to the user.
(b) For a Class B digital device or peripheral, the instructions furnished the
user shall include the following or similar statement, placed in a prominent
location in the text of the manual:
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance 20 cm
between the radiator and your body.
Radiation Exposure Statement:
This equipment complies with FCC radiation exposure limits set forth for an
uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
The availability of some specific channels and/or operational frequency bands
are country dependent and are firmware programmed at the factory to match
the intended destination.
The firmware setting is not accessible by the end user.
The final end product must be labelled in a visible area with the following:
“Contains Transmitter Module FCC ID:2BDC6-SWITCHX3”
Requirement per KDB996369 D03
2.2 List of applicable FCC rules
List the FCC rules that are applicable to the modular transmitter. These are the rules
that specifically establish the bands of operation, the power, spurious emissions, and
operating fundamental frequencies. DO NOT list compliance to unintentional-radiator
rules (Part 15 Subpart B) since that is not a condition of a module grant that is
extended to a host manufacturer. See also Section 2.10 below concerning the need
to notify host manufacturers that further testing is required.3
Explanation: This module meets the requirements of FCC part 15C(15.247).
2.3 Summarize the specific operational use conditions
Describe use conditions that are applicable to the modular transmitter, including for
example any limits on antennas, etc. For example, if point-to-point antennas are used
that require reduction in power or compensation for cable loss, then this information
must be in the instructions. If the use condition limitations extend to professional
users, then instructions must state that this information also extends to the host
manufacturer’s instruction manual. In addition, certain information may also be
needed, such as peak gain per frequency band and minimum gain.
Explanation: The EUT only have one PCB antenna, Yes, the module contains a permanently
attached antenna, The antenna gain is 2.4G:4.26dBi. The use condition of the prototype is
mobile.
2.4 Limited module procedures
If a modular transmitter is approved as a “limited module,” then the module
manufacturer isresponsible for approving the host environment that the limited
module is used with. The manufacturer of a limited module must describe, both in the
filing and in the installation instructions, the alternative means that the limited module
manufacturer uses to verify that the host meets the necessary requirements to satisfy
the module limiting conditions.
A limited module manufacturer has the flexibility to define its alternative method to
address the conditions that limit the initial approval, such as: shielding, minimum
signaling amplitude, buffered modulation/data inputs, or power supply regulation. The
alternative method could include that the limited module manufacturer reviews
detailed test data or host designs prior to giving the host manufacturer approval.
This limited module procedure is also applicable for RF exposure evaluation when it
is necessary to demonstrate compliance in a specific host. The module manufacturer
must state how control of the product into which the modular transmitter will be
installed will be maintained such that full compliance of the product is always
ensured. For additional hosts other than the specific host originally granted with a
limited
module, a Class II permissive change is required on the module grant to register the
additional host as a specific host also approved with the module.
Explanation: The module is a single module.
2.5 Trace antenna designs
For a modular transmitter with trace antenna designs, see the guidance in Question
11 of KDB Publication 996369 D02 FAQ – Modules for Micro-Strip Antennas and
traces. The integration information shall include for the TCB review the integration
instructions for the following aspects: layout of trace design, parts list (BOM),
antenna, connectors, and isolation requirements.
a) Information that includes permitted variances (e.g., trace boundary limits,
thickness, length, width, shape(s), dielectric constant, and impedance as applicable
for each type of antenna);
b) Each design shall be considered a different type (e.g., antenna length in
multiple(s) of frequency, the wavelength, and antenna shape (traces in phase) can
affect antenna gain and must be considered);
c) The parameters shall be provided in a manner permitting host manufacturers to
design the printed circuit (PC) board layout;
d) Appropriate parts by manufacturer and specifications;
e) Test procedures for design verification; and
f) Production test procedures for ensuring compliance.
The module grantee shall provide a notice that any deviation(s) from the defined
parameters of the antenna trace, as described by the instructions, require that the
host product manufacturer must notify the module grantee that they wish to change
the antenna trace design. In this case, a Class II permissive change application is
required to be filed by the grantee, or the host manufacturer can take responsibility
through the change in FCC ID (new application) procedure followed by a Class II
permissive change application.
Explanation: No, The module has no tracking antenna design, is PCB antenna.
2.6 RF exposure considerations
It is essential for module grantees to clearly and explicitly state the RF exposure
conditions that permit a host product manufacturer to use the module. Two types of
instructions are required for RF exposure information: (1) to the host product
manufacturer, to define the application conditions (mobile, portable – xx cm from a
person’s body); and (2) additional text needed for the host product manufacturer to
provide to end users in their end-product manuals. If RF exposure statements and
use conditions are not provided, then the host product manufacturer is required to
take responsibility of the module through a change in FCC ID (new application).
Explanation: This module complies with FCC RF radiation exposure limits set forth
for an uncontrolled environment, This equipment should be installed and operated
with a minimum distance of 20 centimeters between the radiator and your body." This
module is designed to comply with the FCC statement,
FCC ID: 2BDC6-SWITCHX3
2.7 Antennas
A list of antennas included in the application for certification must be provided in the
instructions. For modular transmitters approved as limited modules, all applicable
professional installer instructions must be included as part of the information to the
host product manufacturer. The antenna list shall also identify the antenna types
(monopole, PIFA, dipole, etc. (note that for example an “omni-directional antenna” is
not considered to be a specific “antenna type”)).
For situations where the host product manufacturer is responsible for an external
connector, for example with an RF pin and antenna trace design, the integration
instructions shall inform the installer that unique antenna connector must be used on
the Part 15 authorized transmitters used in the host product. The module
manufacturers shall provide a list of acceptable unique connectors.
Explanation: The EUT only have one PCB antenna, Yes, the module contains a
permanently attached antenna, The antenna gain is 4.26dBi.
2.8 Label and compliance information
Grantees are responsible for the continued compliance of their modules to the FCC
rules. This
includes advising host product manufacturers that they need to provide a physical or
e-label stating “Contains FCC ID” with their finished product. See Guidelines for
Labeling and User Information for RF Devices – KDB Publication 784748.
Explanation:The host system using this module, should have label in a visible area indicated
the following texts: "Contains FCC ID: 2BDC6-SWITCHX3
2.9 Information on test modes and additional testing requirements5
Additional guidance for testing host products is given in KDB Publication 996369 D04
Module Integration Guide. Test modes should take into consideration different
operational conditions for a stand-alone modular transmitter in a host, as well as for
multiple simultaneously transmitting modules or other transmitters in a host product.
The grantee should provide information on how to configure test modes for host
product evaluation for different operational conditions for a stand-alone modular
transmitter in a host, versus with multiple, simultaneously transmitting modules or
other transmitters in a host.
Grantees can increase the utility of their modular transmitters by providing special
means, modes, or instructions that simulates or characterizes a connection by
enabling a transmitter. This can greatly simplify a host manufacturer’s determination
that a module as installed in a host complies with FCC requirements.
Explanation: WiFiRanger, A CHINA DRAGON TECHNOLOGY LIMITED can increase the
utility of our modular transmitters by providing instructions that simulates or
characterizes a connection by enabling a transmitter.
2.10 Additional testing, Part 15 Subpart B disclaimer
The grantee should include a statement that the modular transmitter is only FCC
authorized for the specific rule parts (i.e., FCC transmitter rules) listed on the grant,
and that the host product manufacturer is responsible for compliance to any other
FCC rules that apply to the host not covered by the modular transmitter grant of
certification. If the grantee markets their product as being Part 15
Subpart B compliant (when it also contains unintentional-radiator digital circuity), then
the grantee shall provide a notice stating that the final host product still requires Part
15 Subpart B compliance testing with the modular transmitter installed.
Explanation: The host shoule be evaluated by the FCC Subpart B.
This product uses PCB antenna with a maximum antenna gain 4.26dBi,
2.11 Note EMI Considerations
Note that a host manufacture is recommended to use D04 Module Integration Guide
recommending as "best practice" RF design engineering testing and evaluation in case non-linear
interactions generate additional non-compliant limits due to module placement to host
components or properties
For standalone mode, reference the guidance in D04 Module Integration Guide and for
simultaneous mode7; see D02 Module Q&A Question 12, which permits the host manufacturer
to confirm compliance.
Explanation: The customer is an independent module and has been implemented in
accordance with D04.
2.12 How to make changes
Since . only Grantees are permitted to make permissive changes, it is recommended that module
manufactures provide contact information and some guidance to host providers in the integration
instructions if they expect their module will be used differently than granted.
Explanation: Contact Information: We have provided our technical support contact (email:
svetozar.iliev@shelly.com) for host manufacturers to reach us regarding any proposed changes to
the module's operational conditions or integration method.
IC Statement
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is
subject to the following two conditions:
(1) this device may not cause interference;
(2) this device must accept any interference, including interference that may cause undesired
operation of the device.
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance of 20 cm between the
radiator and your body. This transmitter must not be co-located or operating in conjunction with
any other antenna or transmitter.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage;
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.
Cet équipement est conforme aux limites d’ exposition aux rayonnements de la IC établies pour
unenvironnement non contrôé. Cet équipement doit être installé et fonctionner à au moins 20cm
de distance d’un radiateur ou de votre corps. Cet émetteur ne doit pas être co-localisé ni
fonctionner en conjonction avec une autre antenne ou un autre émetteur.
Cet émetteur radio IC:33486-SWITCHX3 a été approuvé par Innovation, Sciences et
Développement économique Canada pour fonctionner avec les types d'antenne énumérés ci-
dessous, avec le gain maximal admissible indiqué. Les types d'antenne non inclus dans cette
liste qui ont un gain supérieur au gain maximum indiqué pour tout type répertorié sont
strictement interdits pour une utilisation avec cet appareil.
The radio transmitter IC: 33486-SWITCHX3 has been approved by The Ministry of Innovation,
Science and Economic Development of Canada to use the following antenna types with the
specified maximum allowed gain. Antenna types not included in this list, whose gain is higher
than the maximum gain of any type listed, are strictly prohibited from use with this device.
Type of antenna:
PCB antenna
Antenna Gain:
2.4G :2400-2500(4.26dBi)
Impedance:
50hm
Manufacture:
Shelly Europe Ltd.
Model:
Shelly X3 ELEGRP Module
The final end product must be labelled in a visible area with the following:
contains IC:33486-SWITCHX3
