CM550-52W MODBUS GSM GPRS 3G  RTU enables various kinds of devices with I/O and AD and Standard MODBUS protocols to communicate over GSM/GPRS/3G network and the Internet easily and freely. It can construct a smooth "GPRS/3G Data Tunnel" between Host End and Remote End, ensuring an efficient communication for data transmission and remote device management. It also support send user-defined alarm sms when pre-defined alarm condition happens, and can be controlled via SMS command. 

With 8 Digital Inputs, 8 drivable Outputs, 4 analog inputs and 1 selectable RS-232/485 serial port connect slave to read and write 32 registers, CM550-52W is an ideal solution for factory automation, environmental monitoring and remote device management for M2M industry.

1. GPRS, 3G,4G network, support keep online and remote wake-up automatically

2.Anti-vibration; wide working temperature with Industrial grade
3. 8 I/O, Switch, Relay, PWM, analog input/ output
4. Support RS232, RS485, RS422, RJ45
5. support Modbus RTU, Modbus TCP, Modbus RS485
6. Supprot RTC monitoring
7. Support VPN, DDNS, Fixed IP,
8. GPS or 2.4G Zigbee Wave that can range up to 1km in the open area
9. Providing free CMS software platform