
include $25 shipping cost.
SMT Serial UART to GSM GPRS Module
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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
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.
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.
Parameter | Value |
Working Voltage | DC 3.4 ~ 4.2V, recommend: 3.8V |
Working Current | Average: 55 ~ 90mA; Max: 750mA |
Working Temperature | -25 ~ 85°C |
Storage Temperature | -40 ~ 125°C |
Storage Humidity | 5 ~ 95% RH |
Max Launch Power | GSM900 class4 (2W), DCS1800 class1 (1W) |
Working Frequency | 850/900/1800/1900MHz |
Size | 27.9 x 24 x 3 mm |
Network Protocol | TCP, UDP, DNS, Http |
Packing List | USR-GM3*1 |
Network | |
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 / HTTPD |
Network Protocol | TCP,UDP,DNS,Http |
Network Buffer | Send: 4K bytes, receive: 4K bytes |
Serial | |
Port Number | 1 |
Interface Standard | TTL: SMT 2.8 ~ 3.6 V |
Data Bits | 7,8 |
Stop Bit | 1,2 |
Check Bit | None,Even,Odd |
Baud Rate | 2400 bps ~ 921600 bps |
Flow Control | CTS/RTS |
Buffer | Send and receive 4k bytes respectively |
Device Interface | |
SIM Card | 1.8V / 3V |
Speech Interface | 1 channel MIC input, 1 channel SPEAK output |
Software | |
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 | 27.9 x 24 x 3 mm |
Operating Temp. | -25 ~ 85°C |
Storage Temp. | -40 ~ 125°C, 5 ~ 95% RH(no condensation) |
Input Voltage | DC 3.4 ~ 4.2V, recommend: 3.8V |
Working Current | Average: 55 ~ 90mA; Max: 750mA |
More | |
Warranty | 2 years |
Accessory | null |
User Manual
[Datasheet] USR-GM3 Datasheet | download
[User Manual] USR-GM3 Hardware Manual | download
[AT Command] USR-GM3-AT-Command-Set_V1.0.2 | download
[User Manual] USR-GM3 User Manual V1.08 | download
Development File
[PCB Library] USR-GM3 PCB Library File | download
[Demo Code] TCPIP Demo Code | download
Application Software
[USR-VCOM] Virtual Serial Software V3.7.2.525 | download
[USR-TCP-Test] Testing Software | download
[USR-TCP-Test_android] Testing Software | download
[USR-GM3] Setup-Software_V1.2.1.101 | download
Product Certificate
[CCC Certificate]CCC-Certificates-Wireless-Data-Terminal-2018 | download
[CE Certificates] USRIOT 2G Wireless Module CE Certificates | download
Company File