GPRS 3G Remote Control Relay Switch

3G Modbus Controller RTU SMS Alarm,GSM SMS Sensor Unit Supports 3G and 4G version ( skype:lisali1220 WhatsApp:0086 13652426178) With 1 RS-232 serial port, 12 Digital Inputs, 4 relay outputs, CWT5113 is an ideal solution for factory automation, environmental monitoring and remote device management for M2M industry. 12 Digital Inputs Features: 12 voltage level inputs(DC5-30V) (optocoupler isolation, isolation voltage: 5000V) ·Upload data when inputs are triggered ·Upload input