Switch the modes between cool and heat; Control temperature by setting the temperature setting value and the difference value;Temperature calibration; Refrigerating control output delay protection;Alarm when temperature exceeds temperature limit or when sensor error.Specification and sizeFront panel size:75(L)x34.5(W)(mm)Mounting size:71(L)x29(W)mm;sensor length:2m (include the probe)Product size75(L)x34.5(W)x85(D)mm;Technical ParametersTemperature measuring range:-50~99Celsius;Resolution:0.1Celsius;Accuracy:+/- 1Celsius (-50~70Celsius);Sensor error delay:1 minutePower supply:220VAC+/- 10%,50/60Hz;Power consumption:less than equal 3W;Sensor:NTC sensor (1PC);Relay contact capacity:Cool 10A/250VAC;Heat 10A/250VAC;mbient temperature:0~60Celsius;Storage temperature:-30~75Celsius;Relative humidity:20%~85% (No condensate).Material: ABSPackage included:4 x Mini Digital Temperature Controller Thermostat4 x Temperature sensor probe with 2M cable4 x Instruction ManualOnly 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.