RT W1209 DC 12V heat cool temp thermostat temperature control switch temperature controller thermometer thermo controller (Green) Temperature Sensor and Controller Electronic Hobby Kit

Dimensions:48.5 * 40mm Control accuracy:0.1C Hysteresis accuracy:0.1C Refresh rate: 0.5S Supply voltage: DC 12V Static current: < 35MA, attract current < 65MA Output voltage: DC 12V Output power: 20A relay Measurement input: NTC (10K 0.5%) Waterproof Sensor Environmental requirements: -10 ~ 60C , 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