A mini temperature controller. and clear LED display for better readability Wide temperature measuring range Heating and cooling control Temperature calibration Delay protection function All parameters reset to default settings after short circuit Can be used for domestic freezer, water tanks, refrigerators, industrial , boilers, steamers, industrial equipments and other temperature-controlled systems. Rated current: 10A Power consumption: less than equal 3 W Measurement range: -50-110 degree Celsius Measurement precision: 0.1 degree Celsius Measurement error: +-0.3 degree Celsius Working temperature:-20-70 degree Celsius, Humidity: 90% none moisture condensation Temperature sensor: NTC 25 C =10K B3435 (1m, no positive or negative) Output load: DC 9-72V Working voltage: DC 9V-72V +-10%, 50/60 HZ Colour:black Material:plastic Size:8.5 x 7.5 x 3.5 cm / 3.4 x 3 x 1.4 inches Package Contents: 1 x Temperature controller 1 x Temperature sensor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.