.
LoRa DTU
AdoModel Tech Inc.
.
1. Product Overview
LoRa DTU is an industrial-grade data terminal supporting LoRa protocol. Equipped with comprehensive
embedded software functions, it covers most conventional application scenarios. With simple
configuration, users can realize bidirectional transparent data transmission between DTU and LoRa
server platform.
The LoRa DTU adopts sheet-metal enclosure. It supports wide-range DC power input 9~25V and
operating temperature range -30~75℃.It provides stable data transmission channels for unattended field
sites with harsh environment. LoRa-based configuration and management simplify on-site deployment
and subsequent maintenance, improve construction efficiency and reduce overall system operation cost,
bringing convenient wireless communication experience for customers.
Typical applications for distributed unattended field data acquisition & monitoring:
·Power distribution network automation
·Power meter reading
·Street-lamp monitoring
·Smart services
·Heating & water supply monitoring
·Meteorological & environmental monitoring
2. Features and Advantages
·Field-proven for large-scale deployment
·LoRa protocol: low power consumption, long transmission distance, wide coverage
·Full industrial-grade design for harsh conditions
· Hardware & software watch dog plus multiple link detection mechanisms for stable operation
without crash
·High availability and reliability
· Support industrial protocol conversion to solve multi- device inter connection challenges
2.1. Industrial-grade Design for Harsh Industrial Environments
Built with industrial chips; operating temperature: -30~75℃; wide DC input 9-25V; IP30 protection rating.
Delivers stable network communication for harsh
unattended industrial sites.
2.2. High-reliability Design to Ensure Continuous Data
Transmission
· Device self-recovery: embedded watch dog for fault self-healing to guarantee normal operation.
· Auto-reconnection: automatic reconnection upon network disconnection for continuous data
transmission.
2.3. Convenient Management & High Usability
· Loc al se ri a l - p o r t co nf i g ur a t ion via conf i g ur a tio n soft w are
· Rem o te batc h man a g eme n t via Lo Ra ser v e r platfo r m
3. Product Specifications
Table1: Main Hardware Specifications
Interface
Industrial
Serial
Interfaces
Serial port
Total 3serial ports
(1×RS232,1×RS485,1×TTL)
Serial Port1
RS232：TXD、RXD、GND
Positive level：3 ~15V
Negative level： -3 ~ -1 5 V
SerialPort2
RS485：B-、A+、GND
A/B：0~3.3V
SerialPort3
TTL： RX、 TX、 GND
TTL：3~5V
Baud Rate
1200bps~115200bps
Data Bit
8bits
Stop Bit
1bit
Parity
None, Even, Odd
Reset Button
Pin-hole reset key
Antenna
50Ω, SMA connector
Supported
Band
Data rate
2~8Mbps
Band Information
CN470: 0-96channels,default
channels 80-87
Material
Installation
Orbit; Compatible with wall
hanging
Protection
level
IP30
Enclosure
Sheet-metal
Cooling
fan-less
Power Supply
Power
Connector
Removable
industrial terminal
Reverse
polarity
protection
support
Input Voltage
DC9~25V
Overload
protection
support
Standard
Power
Adapter
DC12V/1A
Allow power
loss
<3ms
Power
Consumpti
on
(@12V)
Standby Operating Inrush
15mA 45mA 108mA
Environmental Requirements
Operating
Temperature
-30~75℃
Operating
Humidity
5%~95%
Storage
Environment
-40~85℃；5%~95% RH (non-condensing)
Physical Characteristics
Shock
IEC60068-2-27
Vibration
IEC60068-2-6
Drop
IEC60068-2-32
LED Indicators
LED
VDD、 WORK、 NET、 LINK
Watchdog
Dual hardware & software watch dog
EMC Performance
ESD
EN61000-4-2,Level 4
Radiated RF Immunity
EN61000-4-3,Level 4
Pulsed electric field
EN61000-4-4,Level 4
Surge
EN61000-4-5,Level 4
Conducted Disturbance
EN61000-4-6,Level 4
Power frequency magnetic field
EN61000-4-8,Level 4
Damped Oscillatory Wave
EN61000-4-12,Level 2
Dimensions (including terminals & rail, unit: mm)
91.2 *34.2*22mm
Software Specifications
Reliability
Reliable
Upgrade
Remote Upgrade (Not supported temporarily)
Local Upgrade
Link Online
Monitoring
Heartbeat packet detection, auto-reconnect after
disconnection.
Embedded
Watchdog
Run time self-check & fault self-recovery.
Network Management
Configuration
Local serial-port tool configuration.
serial / remote AT-command configuration.
Config File
Import & export supported.
Upgrade
Method
Supports local firmware upgrade using the JLINK tool.
LoRa Protocol
Network
Protocol
LORAWAN
Concurrent
Device
Capacity
Hundreds to thousands of connected end-devices
Network
Buffer
4KB per serial channel
Merits
Low power, long-range, wide coverage
4. Device Interfaces
No.
Interface
Description
1
Terminal
Block
See pin-definition table for details
2
Reset Button
Hold for 10 stores to refactory default parameters
3
LED
Indicators
See indicator-status table for details
4
Antenna
SMA interface
5. Pin Definition
model
Pin Definition
01
02
03
04
05
06
07
08
09
LoRa DTU
DRX
DTX
RS-TX
RS-RX
GND
B-
A+
GND
DC-IN
Terminology Explanation：
DRX: TTL RX, device input
DTX: TTL TX, device output
RS-TX: RS232 transmit, device output
RS-RX: RS232 receive, device input
GND: Ground
B-: RS485 signal
B-A+: RS485
signal A+
GND: Power negative, Supported power
supply voltage: DC 9-25 V
DC+：Power positive, Supported power
supply voltage: DC 9-25 V
6. LED Indicator Status
LED order from top to bottom: POWER, WORK, NET, LINK
Indicator
Function
LED Status
Device Status
POWER
Power indicator
Off
Power off
On
Power on
WORK
Operating
indicator
Off
Abnormal
operation
Steady On
Abnormal
operation
Blink upon data
transmit/receive
Normal running
NET
Network
attachment
indicator
Off
Not connected to
LoRa server
On
Connected to
LoRa server
LINK
RS485transparent
-transmission
indicator
Off
No RS485
transparent data
flow
On
RS485
transparent data
in transmission
7. Installation
Guider ail installation; compatible with wall mounting (screw and spacer allow wall mounting).
8. Packing List
Main unit: LoRa DTU
Accessory: LoRaCN470 antenna
9. Product Dimensions
Dimensions：91.2× 34.2× 22 mm (L× W× H including terminals and antenna)
Applicable model: LoRa DTU
FCC Statement
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 equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. This transmitter must not be co-
located or operating in conjunction with any other antenna or transmitter.
Radiated Exposure Statement
This device complies with FCC radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator
& your body. The antenna used for this transmitter must not transmit simultaneously with any other
antenna or transmitter, except in accordance with FCC multi-transmitter product procedures. Users
and installers must be provided with antenna installation instructions and transmitter operating
conditions for satisfying RF exposure compliance.
