Elitech STC-8080HX  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: Middle-low  temperature cold storage, wind cooling cabinet, kitchen cabinet, operating console, refrigerating display cabinet Refrigerating, timing defrost modes optionally Exceeding temperature alarm Temperature upper and lower limit setting Compressor delay protection adjustment (STC-8080HX-02) Sensor error occurs, the compressor turns on/off with proportional time Refrigeration,Defrost,1NTC,Temperature Calibration Specifications: 71mm x 29mm hole installlation Product size: 80.5mmx34.9mmx65.8mm Power supply: 220vac + 10% / - 15%, 50 / 60hz. Power consumption : < 3w Temperature measuring range : - 50c ~ + 99c Temperature control range: ~ 40c ~ + 50c Resolution: 1c Accuracy: + 1c when temperature - 40c ~ + 50c, + 2c at others 10a / 277vac csn drive single phase compressor relay capacity of compressor Relay capacity of defroster : 10a / 277vac 1 minute relay time sensor error Type sensor : Ntc sensor Ipx4 front panel safe level: Operating temperature: 0c ~ 60c Temperature storage: - 30c ~ + 75c Relative humidity : 20% ~ 85% (no condensate) Package Includes: 1 x STC-8080HX-02 Microcomputer Temperature Controller (Elitech)