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 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 fan):8A/220VAC Use temperature:-5Celsius-55Celsius Relative humidity:10%-90%RH (not condensing) Storage temperature:-30Celsius-85Celsius Input: 2 NTC sensor Colour:Blackandred 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 are not included. Note: Light different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is 1-3cm.