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



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