Model:ETC-974 Temperature measure range: NTC probe :-50-110Celsius(-58-230Fahrenheit) PTC probe:-55-140Celsius(-67-284Fahrenheit) Display resolution:1Celsius or 01Celsius(with the swithch mode between integer and decimal) Accuracy:NTC:05Celsius(-30Celsius-50Celsius) other1Celsius PTC:1Celsius(-30Celsius-50Celsius) other2Celsius Probe type :NTC(-50Celsius-120Celsius) PTC(-50Celsius-150Celsius) supply:230VAC10 percent 50 or 60Hz Rated current of the relays(refrigeration ,defrost and fan):8A or 220VAC Use temperature:-5Celsius-55Celsius Relative humidity:10 percent -90 percent RH (not condensing) Storage temperature:-30Celsius-85Celsius Input: 2 NTC sensor Colour:Blackandred Material:plastic Size:77x345x58mm 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 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.