Specifications:
<br />Temperature range :-50-110  
<br />Dimensions: 48.5 * 40mm
<br />Temperature control mode: ON / OFF
<br />Resolution When temperature is 0.1 , the resolution is -9.9~99.9, other temperature segment is 1 
<br />Control accuracy: 0.1  
<br />Hysteresis accuracy: 0.1 
<br />Refresh rate: 0.5S
<br />High temperature protection  0-110 
<br />Supply voltage: DC 12V
<br />Static current:   35MA, attract current   65MA
<br />Output voltage: DC 12V
<br />Output power: 20A relay 
<br />Measurement input: NTC (10K 0.5%) Waterproof Sensor
<br />Environmental requirements: -10 ~ 60    Humidity 20% -85%
<br />How to use:
<br />Connect the power supply and the load, you can supply to the controller,
<br />Is displayed as a measured temperature,
<br />Press the SET button, the display flashes the temperature,
<br />Press - to set the desired temperature,
<br />After setting press SET to confirm return,
<br />The controller automatically performs the relay by setting off!
<br />Lights, LED status descriptions:
<br />Indicator: Off The relay is switched off, Always indicate the relay is closed.
<br />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.
<br />Package Included:
<br />1 x -50-110°C W1209 Digital thermostat Temperature Control Switch 12V + sensor