Supply voltage: 12 V DC, output voltage: DC 12 V Output power: 10 a relay Input measurement: ntc (10 K 0.5 %) waterproof sensor, temperature control mode: on/off, temperature range: -50~+110'C Dimensions: 48.5*40mm Indicator: OFF indicates that the relay is off; ALWAYS indicates that the relay is closed. Specifications Temperature range: -50 to 110C Resolution: When the temperature is 0.1C , resolution is -9.9 ~ 99.9, other temperature segment is 1C Regulation accuracy: 0.1C Hysteresis accuracy: 0.1C Refresh rate: 0.5S High temperature protection: 0-110C Power supply voltage: DC 12V Output voltage : 12V DC Static current: 35mA, draw current65MA Output power: 10A relay Measurement input: NTC (10K 0.5 %) Waterproof sensor Environmental requirements: -10~60, Humidity 20% -85% This control temperature controller can be used in the (liquid, mold, space) and other control heating, can also be used (box, device, water, pet rooms, air conditioning) and other control refrigeration. How to use: Connect the power supply and 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 the return, The controller will automatically relay by triggering Lights, LED status descriptions: Indicator: Off The relay is de-energized, always indicate the relay is closed. LED: Indicates LL is the sensor open, showing HH is out of range, the thermostat will be forced to close the relay, the display --- that high temperature protection?. Package included: 1x digital temperature control switch