Model: ETC-974 Temperature measure range: NTC probe : -50~110Celsius(-58~230Fahrenheit) PTC probe: -55~140Celsius(-67~284Fahrenheit) Display resolution: 1Celsius/0.1Celsius(with the swithch mode between integer and decimal) Accuracy: NTC: 0.5Celsius(-30Celsius~50Celsius);other1Celsius PTC: 1Celsius(-30Celsius~50Celsius); other2Celsius Probe type : NTC(-50Celsius~120Celsius) ;PTC(-50Celsius~150Celsius) Power supply: 230VAC10% ;50/60Hz Rated current of the relays(refrigeration ,defrost and fan): 8A/220VAC Use temperature: -5Celsius~55Celsius Relative humidity: 10%-90%RH (not condensing) Storage temperature: -30Celsius~85Celsius Input: 2 NTC sensor Colour: Black+red Material: plastic Size: 77x34.5x58mm Sensor lenth: 2M(include the probe) Package Contents: 1 x Temperature Controller 1 x NTC probe 1 x PTC probe Only the above package content,other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.