Elitech STC-8080A+ Thermostat Temperature Controller main functions as below: 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 the temperature exceeds Features: To measure, display, and control temperature; Defrosting cycle and defrosting time is adjustable; Alarm when the temperature exceeds setting temperature limit value; Compressor startup delay protection; Compressor work at a scheduled time when sensor error. Specifications: Power Voltage: 12V Power Consumption : <3W Temperature Display Range: -40 degree ~+50 degree de Measuring Accuracy: ±1 degree de Resolution :  1 degree Sensor : NTC, sheathed lead Relay Capacity of Compressor : 7A/240VAC Relay Capacity of Defroster: 7A/240VAC Alarm Output: Buzzer + LED flashing T emperature Calibration Range : ±5 degree Adjustable Range of Temperature Overrun Alarm : 0 degree ~20 degree Defrosting Cycles: 0~99 hours adjustable Defrosting Time: 0~99 minutes adjustable Power on Delay : 3 minutes Sensor Wire Length : 2M(include the probe) Product Size(mm) : 75×34.5×85.5(L*W*H) Installing Size(mm): 70×28.8(L*W) Color : As shown Package Includes: 1 x STC-8080A+ Digital Temperature Controller Elitech