Smallest GPRS DTU,UART to GSM/GPRS Module

Unique Features

1.Support Four frequency: 850/900/1800/1900Mhz

2.Support Httpd Client

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

4.Support Remote Configuration via SMS

GPRS Module Download

User Manual: USR-GM3

Evaluation Kit: USR-GM3-EVK

Client Support Center: submit your ticket at h.usriot.com If you have technical problems about the product.

GPRS Module Introduction

This is a serial uart to gprs module,used for data transparent transmission.USR-GM3 is highly-integrated UART to GSM/GPRS module.Users can easily make communication with it among serial device,cellphone and network device.USR-GM3 is an embedded GSM module. It is designed for embedded system, and it is so small and convenient that you can integrate it to your system easily.

GPRS Module Feature

• Small and completed function GPRS DTU, transmission between serial and GPRS
• 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 3 work modes: SMS transmission mode, network transmission mode and HTTPD 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
• Support RS485

GPRS Module Parameter

GPRS Module Structure

GPRS Module Images