GM3
Description
Low Power GSM GPRS Module
GM3 is highly-integrated Low Power GSM GPRS Module, used for data transparent transmission.
- SMD Type
- Operation temperature Range of -25° ~85°
- Quad-Band GSM/GPRS 850/900/1800/1900MHz
Features
Introduction of Low Power Gsm Modules
The Low Power Gsm Modules, used for data transparent transmission. GM3 is highly-integrated UART to GSM/GPRS module. Users can easily make communication with it among serial device, cellphone and network device. 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.Features of Low Power Gsm Modules
Small and completed function GPRS DTU, transmission between serial and GPRSSupport GSM850/900,DCS1800/1900Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G networkSupport 2 sockets, Support TCP and UDP4KB cache for each of sockets, user can choose to cache data or notSupport register packet and heartbeat packetSupport setting parameters via SMS messageSupport 3 work modes: SMS transmission mode, network transmission mode and HTTPD modeSupport basic and extend AT command setsSupport class RFC2217, can dynamically modify serial parameter of module via networkSupport flow control: RTS/CTSSupport RS485Function of Low Power Gsm Modules
Structure of Low Power Gsm Modules
Unique Features of Low Power Gsm Modules
When GM3 module works as TCP CLIENT, and after TCP connection is established, module will automatically send scheduled register packet to help TCP Server identify the TCP connection.
Register packet includes IMEI code, ICCID code and user-defined register data.
GM3 GPRS module can send heartbeat packet to network server and serial device in network transmission mode.
GPRS module maintains the normal connection with server by keeping sending serial heartbeat packet.
Serial heartbeat packet is mainly applied to sensors which can not actively send data to server. And serial heartbeat packet can realize real-time monitoring of sensor device.
LBS base station location can get location information of USR-GM3 by mobile network.
Socket b function is suitable for such requirements as sending data to two servers, data backup and remote abnormity diagnosis.
GM3 connects with FTP server to remotely upgrade user’s devices such as charging pile, instruments and remote POS machine. Only custom firmware has this function.Application
Application Field of Low Power Gsm Modules
Agricultural IOT Environment Monitoring Solution
Charging Pile Data Real-time Transmission Solution
City Bus Real-time Data Acquisition Solution
Remote POS Online Payment Solution
Image of Low Power Gsm Modules
Product Specification
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 Be the first to review “GM3”
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