Life Sensing Instruments, Inc. | CONFIDENTIAL Pg. 1
BEDSIDE WIRELESS TRANSMITTER
Operator’s Manual
Life Sensing Instruments, Inc.
December 17, 2025
Life Sensing Instruments, Inc. | CONFIDENTIAL Pg. 2
BMT Overview
The Bedside Wireless Transmitter (BMT) is a component of a medical patient monitoring system designed to transmit
physiological data from a third-party bedside monitor to a central monitoring station via a telemetry receiver. The BMT
communicates with the telemetry receiver via the supplied external whip antenna.
The BMT connects directly to a bedside monitor via an RS-232 interface cable. This connection serves two functions:
• Power Supply – The bedside monitor provides 5 V DC power to the BMT over the RS-232 connection.
• Data Interface – Patient physiological data is sent from the bedside monitor to the BMT through the same RS-232 link.
The BMT transmits the data acquired from the bedside monitor to the telemetry receiver using the Wireless Medical Telemetry
Service (WMTS) bands of 608–614 MHz, 1395–1400 MHz, and 1427–1432 MHz. The telemetry receiver then forwards the data
to the central monitoring station for real-time display, trending, and analysis by healthcare professionals. In addition to
transmitting patient data, the BMT can receive commands and configuration updates from the telemetry receiver over the ISM
band (910–920 MHz).
The following data can be transmitted from the bedside monitor using the BMT:
• ECG Lead II waveform and Heart Rate data
• SpO2 Pleth waveform, SpO2 level and Pulse Rate data
• Respiration
• NIBP
• Temperature
Instructions for Use
Connect the DB-9 serial cable on the BMT to the designated/labeled port on the rear of the supplied bedside monitor. The
bedside monitor will provide power and data to the BMT. There is no additional user interaction required. The BMT has no user-
serviceable parts and no user controls. All configuration is performed through the telemetry receiver.
Antenna Information
The BMT is designed for operation only with the antenna supplied or expressly approved by Life Sensing Instruments, Inc.
Substitution of other antennas is not permitted without the express written approval of Life Sensing Instruments, Inc. Use of
unauthorized antennas may void the equipment authorization and the user’s authority to operate the device.
Authorized Antenna:
Manufacturer
Antenna
Description
Type
Peak Gain
Ω
Connector Type
TE Connectivity
IN7-3RD
Whip Antenna
Monopole
3 dBi
50
SMA
Support Services
The authorized support provider for the BMT is Life Systems International (LSI), located in Charlotte, NC. Support services
include hardware support available through the Repair Depot. To learn more about the support services offered by LSI, call 800-
846-1279 x1.
Repair Depot
For repair services of the BMT, contact the authorized support provider:
LSI
Attn: Repair Depot
2102 Cambridge Beltway Dr., Ste. A
Charlotte, NC 28273
800-846-1279 x1
support@lsi-medical.com
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BMT SPECIFICATIONS
MECHANICAL
PHYSICAL DIMENSIONS (WxHxD) 2" W x 3.2" H x .5" D
WEIGHT 3.2 oz
ANTENNA CONNECTOR
CONNECTOR SMA FEMALE
DATA
PROTOCOL INFINIUM 2.0
TRANSMISSION RATE BAUD RATE: 57600
CONNECTOR DB-9
ELECTRICAL
INPUT VOLTAGE 5VDC, SUPPLIED BY BEDSIDE MONITOR
CONNECTOR DB-9
WIRELESS
MODULATION 4GFSK (WMTS), FSK 150 KHz (ISM)
FREQUENCY BAND (TRANSMIT) 608.00-614.00, 1395.00-1400.00, 1427.00-1432.00 MHz
FREQUENCY BAND (RECEIVING) 910.00 – 920.00 MHz
ANTENNA SPECIFICATION
MECHANICAL
DIMENSIONS H X W 6.2 H x 0.6 W
CONNECTOR SMA MALE
ELECTRICAL
GAIN (AVG) 3 dBi
VSWR (MAX) < 1.5:1
POLARIZATION ANTENNA ORIENTATION DEPENDENT
(VERTICAL/HORIZONTAL)
IMPEDANCE 50 OHM
TYPE MONOPOLE
INDOOR/OUTDOOR INDOOR USE ONLY
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FCC Information
Tested to Comply with FCC Standards Responsible Party:
Product Name: Bedside Monitor Transmitter Life Sensing Instruments, Inc.
Model Number: BMT 2102-A1 Cambridge Beltway Dr.
FCC ID: OF8-BMT1 Charlotte, NC 28273
800-624-2732
Life Sensing Instruments, Inc. declares that the above device complies with the requirements of the Federal
Communications Commission.
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.
Changes or modifications not expressly approved by Life Sensing Instruments, Inc. could void the user’s authority
to operate the equipment.
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.
This equipment complies with FCC Part 95 Subpart H for Wireless Medical Telemetry Service (WMTS). Operation
is subject to the condition that this device does not cause harmful interference. Use of this equipment is restricted
to healthcare facilities by authorized health care providers or their designated agents. Manufacturers, installers, and
users of WMTS equipment are cautioned that the operation of this equipment could result in harmful interference
to other nearby medical devices, in accordance with FCC 95.2395. In accordance with FCC 95.2309(h), this WMTS
transmitter must be registered with an FCC-designated frequency coordinator prior to use.
Use of the equipment requires prior coordination with the ASHE frequency coordination designator. For further
guidance, visit the ASHE website at: www.wmtssearch.com. Operation in the 608 – 614 MHz band must be
coordinated with an FCC-designated WMTS frequency coordinator. Operation in the 1395 – 1400 MHz and 1427 –
1432 MHz bands may also require frequency coordination to avoid interference with coexisting systems.
