Model: ETC-974 Temperature measure range: NTC probe: -50~110C (-58~230F) PTC probe: -55~140C (-67~284F) Display resolution: 1C / 0.1C (with switch mode between integer and decimal) Accuracy: NTC: 0.5C (-30C ~ 50C); 1C (other ranges) PTC: 1C (-30C ~ 50C); 2C (other ranges) Probe type: NTC (-50C ~ 120C); PTC (-50C ~ 150C) Power supply: 230VAC 10%; 50/60Hz Rated current of the relays (refrigeration, defrost, and fan): 8A/220VAC Operating temperature: -5C ~ 55C Relative humidity: 10%90% RH (non-condensing) Storage temperature: -30C ~ 85C Input: 2 NTC sensors Color: Black + red Material: Plastic Size: 77 x 34.5 x 58mm Sensor length: 2m (including the probe) Package Contents: 1 x Temperature Controller 1 x NTC Probe 1 x PTC Probe Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm. Only the above package content is included; other products are not included.