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GPRS Module USR-GPRS232-7S3


8 in stock (can be backordered)

Module GPRS | UART GSM Modules


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Availability: 8 in stock (can be backordered)

8 in stock (can be backordered)

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GPRS Module USR-GPRS232-7S3 Introduction of Cost-effective UART GSM Modules 

GPRS Module USR-GPRS232-7S33 are Cost-effective UART GSM Modules used for data transparent transmission, which are highly-integrated UART to GSM/GPRS modules. Users can easily make communication with it among serial device, cellphone and network device. USR-GPRS232-7S3 is based on USR-GM3 GPRS module. Clients can use the product to realize bidirectional transparent transmission from serial port to network through simple AT command.


  • Support GSM850/900,DCS1800/1900.
  • Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network.
  • Support 2 sockets, Support TCP and UDP.
  • 4KB cache for each of sockets, user can choose to cache data or not.
  • Support register packet and heartbeat packet.
  • Support setting parameters via SMS message.
  • Support multi work modes: SMS transmission mode, network transmission mode and https D mode.
  • Support basic and extend AT command sets.
  • Support class RFC2217, can dynamically modify serial parameter of module via network.
  • Support flow control: RTS/CTS.

Application Field of Cost-effective GSM Modules

  • 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.
SKU: Module USR-GPRS232-7S3 Categories: , ,
Standard GSM / GPRS
Rate 14.4 Kbps ~ 57.6 Kbps
Standard Frequency Range 850/900/1800/1900MHz
GPRS Multi-slot Class GPRS Class 10
GPRS Terminal Device Class Class B
GPRS Coding Schemes CS1 ~ CS4
Max Launch Power GSM900 class4 (2W), DCS1800 class1 (1W)
Application GSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission
Network Protocol TCP, UDP, DNS,https
Network Link Count 2
Network Buffer Send: 4K bytes, receive: 4K bytes
Port Number 1
Interface Standard TTL: 2.54 pin type 2.8 ~ 3.6 V
Data Bits 5, 6, 7, 8
Stop Bit 1, 2
Check Bit None, Even, Odd
Baud Rate 2400 bps ~ 921600 bps
Flow Control CTS/RTS
Buffer Receive and send 4K bytes respectively
Device Interface
Antenna Interface IPEX
SIM Card 1.8V / 3V
Speech Interface 1 MIC input, 1 SPEAK output
Virtual Serial(USR-VCOM) Windows 2000 or higher (32 bit/64 bit)
Configuration Serial AT command, SMS AT command, network AT command
Basic Parameter
Size 44.5 x 32 x 13(mm)
Operating Temp. -25 ~ 85°C
Storage Temp. -40 ~ 125°C, 5 ~ 95% RH(no condensation)
Input Voltage DC 5 ~ 16 V
Working Current Average: 35 ~ 48mA, max: 394mA(12v)



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