RS485 Industrial GSM Modems | M2M GPRS Modems

RS485 Industrial GSM Modems | M2M GPRS Modems

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  • $
  • Model:
  • USR-GPRS232-734
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Product Name:RS485 Industrial GSM Modems | M2M GPRS Modems

  • Model:USR-GPRS232-734


USR-GPRS232-734 is a new industrial gsm modem which developed by USR IOT in 2016. Maturation software functions, covering mostly conventional application scenarios. Users can realize Serial to Network bidirectional transparent data transmission via simple configuration. Supporting custom registration package, heart beat package. Supporting 2 Socket Connection, and USR cloud join in.

industrial gsm modem USR-GPRS232-734 use DC power supply and terminal power supply, supporting 5.0V~36.0V wide voltage power supply. RS485 circuit using electrical isolation scheme, has anti-interference ability, suitable for strong electromagnetic interference environment, such as utility industry.


Features of RS485 GPRS Modems USR-GPRS232-734

Support:GSM850/900,DCS1800/1900,able to be used around the world

Support GSM/GPRS/EDGE and 2G/3G/4G card, but don’t support 3G/4G network

Each connection support 4KB data cache, when in abnormal connection choosing data cache to avoid data lost

Support sending registration package and heartbeat package data

Support remote configuration via SMS

Support multi work modes: SMS transmission mode, network transmission mode and httpsD mode

Support basic instruction set and extension instruction set

Support establishing, maintaining and closing network connection by using extension instruction set, more flexibility in application

Support sending Chinese/English SMS via simple instructions, avoiding PDU sending Chinese SMS which complex and hard use

Support class RFC2217,can modify module serial parameter via network dynamically

Support wide voltage 5~36V power supply, using DC power supply and terminal power supply

RS485 circuit using electrical isolation scheme, has anti-interference ability


Application Field of Industrial GSM Modems USR-GPRS232-734

Power industry: power remote meter reading, substation monitoring, power line monitoring

Municipal industry: street lamp remote monitoring management, pipe network remote monitoring, urban energy consumption monitoring

Oil industry: remote monitoring of oil-gas well, GPRS remote oilfield automation detection monitoring system, Gas pipe network monitoring system solutions

Environmental protection industry: pollution sources monitoring, atmospheric environment monitoring, noise monitoring, dust monitoring

Agricultural application: greenhouse remote monitoring and management, aquaculture monitoring management, agricultural water pump monitoring management


Support PUSR Cloud

Hardware Dimensions


1.Application in public server

RS485 Serial GSM Modem Application in public server

2.Use network to extend serial communication distance

RS485 Serial GSM Modem Use network to extend serial communication distance

3. Server transit mode

RS485 Serial GSM Modem, Server transit mode

Wireless Parameter
Wireless StandardGSM/GPRS/EDGE
Standard Frequency Band850/900/1800/1900MHz
Transmitted PowerGSM900 class4 (2W)
DCS1800 class1 (1W)
GPRS Terminal Device ClassClass B
GPRS Multi-slot ClassGPRS Class 10
GPRS Coding SchemesCS1 ~ CS4
Antenna OptionSMA interface
Hardware Parameter
Data InterfaceRS485 level, 5.08*3 terminals
Baud Rate2400bps - 921600bps
Working VoltageDC 5V~36V
Working Current59mA ~ 65mA (12V)
Operating Temp.-25° - 85°
Storage Temp.-40° - 125°
Size82.5 * 86.0 * 24.0 mm
RS485 reliabilityElectrical Isolation
ESD air 15KV
Surge 4KV (8/20us)
Software Parameters
Wireless Network TypeGSM/GPRS/EDGE
Working ModeTransparent transmission mode, SMS transparent transmission mode and httpsD mode
Setting CommandAT+ Command structure
Network ProtocolTCP/UDP/DNS/https
Max. TCP Connection2
User ConfigurationSerial AT command, network AT Command, SMS AT Command
User Internet ApplicationsSupport custom application software
Software Functions
Simple Transparent Transmission modeSupport TCP Client /UDP Client
https protocol transmissionSupport
SMS transparent transmissionSupport
Heartbeat PackageSupport
Class RFC2217Support
Registration Package MechanismSupport custom/ICCID/IMEI registration package


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