Features: 100% brand new and high quality Modle: STC-1000 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. Technical Parameters: 1.Temperature measuring range: -50 ° C ~ 99 ° C 2.Resolution: 0.1 ° C; 3.Accuracy: ±1° C (-50 ° C ~ 70 ° C); 4.Sensor error delay: 1 minute 5.Power supply:AC 110-220V 50/60Hz 6.Power consumption: <3W; 7.Sensor: NTC sensor (1PC); 8.Relay contact capacity:Two Relay :Refrigeration 10A/220VAC; Heat 10A/220VAC; 9.Ambient temperature: 0 ° C ~ 60 ° C; 10.Storage temperature: -30 ° C ~ 75 ° C; 11.Relative humidity: 20% ~ 85%(No condensate) 12.Sensor length: 1.0m 13. Front Panel Size: 75x34.5mm ; Product Size: 75x34.5x85 mm ; Mounting Size: 71x29mm Shell material:ABSplastic Color:black Package included:1 pc