Features:1. Highquality plastic material, hard, durable and corrosionresistant, and also has long service life.2. Small, light in weight, easy to install and operate, and can be used without complicated steps.3. Wide temperature control range, temperature control range is 50110, control accuracy is 0.1.4. Sophisticated production, provides stable performance, high work efficiency, can better meet your needs.5. Comes with a high accuracy sensor, you don't need to buy a sensor seperately, saving your cost.Specifications:Temperature range :-50-110 Dimensions: 48.5 * 40.1 * 15.8mmTemperature control mode: ON / OFFResolution: When temperature is 0.1, the resolution is -9.9~99.9, other temperature segment is 1Control accuracy: 0.1 Hysteresis accuracy:0.1Refresh rate: 0.5SHigh temperature protection: 0-110Static current: 35MA, attract current 65MAOutput power: 10A relayMeasurement input: NTC (10K 0.5%) Waterproof SensorEnvironmental requirements: -10 ~ 60 , Humidity 20% -85%How to use:Connect the power supply and the load, you can supply to the controller,Is displayed as a measured temperature,Press the SET button, the display flashes the temperature,Press - to set the desired temperature,After setting press SET to confirm return,The controller automatically performs the relay by setting off!Lights, LED status descriptions:Indicator: Off The relay is switched off, Always indicate the relay is closed.LED: Shows LL is the sensor open, showing ?HH is out of range, the thermostat will be forced to close the relay, the display --- as high temperature protection.Package Included:1 x 12V W1209 Digital thermostat Temperature Control Switch+ Sensor .