Model: ETC-974 Temperature measure range: Probe: -50 to 110C (-58 to 230F); PTC probe: -55 to 140C (-67 to 284F) Display resolution: 1C / 0.1C (switch mode between integer and decimal) Accuracy: 0.5C (-30C to 50C); 1C for other ranges. PTC: 1C (-30C to 50C); 2C for other ranges Probe type: -50C to 120C; PTC: -50C to 150C Power supply: 230VAC 10%, 50/60Hz Rated current of relays (refrigeration, defrost, and fan): 8A / 220VAC Operating temperature: -5C to 55C Relative humidity: 10% to 90% RH (non-condensing) Storage temperature: -30C to 85C Input: Sensor Sensor length: 2M (including probe) Product Type: Temperature Controller Display Type: Digital Usage: Household Power Type: AC Powered Style: Standing and Wall Hanging Display Size: 1.9 Inches and Under Color: Black Material: Plastic Dimensions: 77 x 34.5 x 58mm Package Contents: 1 x ETC-974 Digital Temperature Controller Note: Light and display differences may cause slight color variation between the image and the actual item. Measurement error allowance is 1-3cm.