GSM SMS ALARM CONTROLLER GSM TEMP & HUMIDITY DATA LOGGER I-7011 ANALOG INPUT MODULE I-7017 ANALOG INPUT MODULE I - 7018 ANALOG INPUT MODULE I - 7021 ANALOG OUTPUT MODULE I - 7045 DC DIGITAL I/O I - 7050 DC DIGITAL I/O I - 7080 ENCODER/FREQUENCY/COUNTER INPUT I - 7561 CR SERIAL TO USB CONVERTER USR - TCP 232 - 306 SERIAL TO ETERNET DEVICE SERVER USR - TCP 232 - 410S SERIAL TO ETHERNET CONVERTER , SUPPORT MODBUS RTU & TCP USR - WIFI 232 - 610 - V2 SERIAL TO WIFI CONVERTER MODULE
