Low Price Cellular M2M RTU for Alarm Controller

* GSM/GPRS/3G/4G network communication, can be operated from anywhere, no distance limitation;
* Embedded ARMCortex -M4 32 Bit RISC Core, 168 MHz inside, RTOS system, reliable performance with in-built watchdog;
* Powerful SMS function: threshold high SMS alert, SMS set, SMS inquiry;
* Automatically resend the data while communication interrupt or failure, and failure will alert by SMS text to users;
* Supports remotely restart the RTU, and configure& operate it by SMS commands remotely;
* 10 SMS Alert and auto dial numbers for receiving alarm message, can program to receive specified alarm message. The authorizednumbers also can dial to open the door or turn on/off machine with a free charge call at the specified time;
* Modular structure design, replace a module can upgrade the network from 2G to 3G/4G or 3G to 4G;
* Support SMS, dial, GPRS, 3G , 4G network for alert, USB port for configuration and upgrade firmware;
* Inbuilt large capacity rechargeable backup battery, alert when external power failure,standby time is 5 hours;
* Support TCP/UDP,MQTT,Modbus TCP, Modbus RTU over TCP, King Pigeon IoT RTU protocol and data transparent transmission function;