![GPRS模块工业gsm无线数传dtuUART转GPRS|短信透传有人USR-GM3 外置天线版[TF12-004]](/images/9aa149413f86a415725206bdaa5f6bd2.jpg "GPRS模块工业gsm无线数传dtuUART转GPRS|短信透传有人USR-GM3 外置天线版[TF12-004]")
| classification | Parameters | numerical value |
| Wireless parameters | Wireless standard | GSM/GPRS |
| Standard frequency range | 850/900/1800/1900MHz | |
| Transmission power | GSM900 class4（2W） | |
| DCS1800 class1（1W） | ||
| GPRS Terminal Device Class | Class B | |
| GPRS Multi-slot Class | GPRS Class 10 | |
| GPRS Coding Schemes | CS1 ~ CS4 | |
| Antenna options | I-PEX interface | |
| Hardware parameters | data interface | UART：2400bps - 921600bps |
| working voltage | DC 3.4V~4.2V | |
| Working Current | Average 55mA-90mA maximum: 750mA | |
| working temperature | -25℃- 85℃ | |
| Storage temperature | -40℃-125℃ | |
| size | 27.9×24.0×3.0mm | |
| Software parameters | Wireless Network Type | GSM/GPRS/EDGE |
| Working mode | Transparent transmission mode, SMS transmission mode | |
| HTTPD mode, UDC mode | ||
| set command | AT+Command Structure | |
| Network Protocol | TCP /UDP/ DNS/HTTP | |
| Maximum TCP Connections | 4 | |
| User Configuration | Serial AT command, network AT command, SMS AT command | |
| Customer Application Software | Support Customer Customized Application Software | |
| software function | Domain Name Resolution DNS | Support |
| Simple method of transmission | Supports TCP client/UDP Client | |
| HTTP Protocol Transport | Support | |
| SMS Transmit | Support | |
| Heartbeat Packet | Support | |
| Class RFC2217 | Support | |
| Register Package Mechanism | Support for custom/ICCID registration packages |
After sale instructions
