GSM Sms Temperature Alarm, Brand Name : KingPigeon

The GSM SMS Temperature Alarm Controller RTU5018 is a very simple programmable IO ports (2DIN, 2DOUT, 1 Temperature) and cost effective GSM RTU which special for monitoring field temperature by SMS text message. Also, it can be used for remote switching machine, automation system and other applications.
It inbuilt one Temperature Sensor already, and external port for external temperature sensor is available. The temperature sensor is DS18B20, 12bits, measures temperatures from –55°C to +125°C (–67°F to +257°F), 0.5°C accuracy from –10°C to +85°C, can setup interval time, interval value, ultra-high, high, low, ultra-low temperature alarm can active one or both of the relay outputs and send programmable SMS and dial to authorized phone numbers;
Just dial from Authorized User number then one of the two relay output or any one of the relay output will be switched on or off. There are no call costs, the GSM SMS Temperature Alarm Controller rejects the call from authorized number then carries out the turn ONOFF action.
Moreover, the RTU5018 with 2 digital inputs for digital inputs, when any one of the inputs triggered, will activate one or both of the relay outputs, in the meanwhile, the RTU5018 will send SMS Alert to owners immediately. This is very useful if you need protect your assets with low cost solution.