Temp. measure&control:-50~+50celsius Dule-sensor Control compressor,fan,defrost Defrost:thermal&electric heating ... new optimizing product especially designed for refrigerant units. Double-sensor control, control three-load synchronously, proper and complete protection ... ), 380 VAC ±10%, 50HzTemperature measuring and controlling range: -50~+50Accuracy: ±1 Compressor start-up delay protection time: 0~ ...