Function Characteristics: Small integrated intelligent control, can be directly control (a horse) compressor within a horse.Temperature display/Temperature control/Electric heating, hot gas defrosting/Lighting control/Glass defogging/High, low temperature alarm/set memory/Parameter Lock/Self diagnosis.Technical Parameter:External sealed transformer output: AC 12 V (one transformer can only be used with one thermostat)Temperature sensing probe: NTC, two (storage temperature, defrost controlTemperature display range: - 45 ~ 150 ℃, accuracy: + / - 1 ℃Control temperature range: - 45 ~ 50 ℃, the factory value: - 18 ℃Appearance size: 142 mm (length) x 40 mm (width) x 40 mm (depth)Hole size: 138 mm (length) x 32.5 mm (width)Working environment temperature: - 10 ~ 60 ℃, relative humidity: 20% ~ 90% (no frost)Relay contact capacity:Compressor: normally open 30 A / 250 VAC (can be applied directly to a compressor, horse over to connect ac contractor)Lighting relay: normally open 5 A / 250 VACGlass demisting: normally open 10 A / 250 VACEvaporator fan: normally open 5 A / 250 VACDefrosting heating wire: normally open 10 A / 250 VAC