Model: ETC-974 Temperature measure range: Probe: -50 to 110°C (-58 to 230°F); PTC probe: -55 to 140°C (-67 to 284°F) Display resolution: 1°C / 0.1°C (switch mode between integer and decimal) Accuracy: ±0.5°C (-30°C to 50°C); otherwise ±1°C. PTC: ±1°C (-30°C to 50°C); otherwise ±2°C Probe type: -50°C to 120°C; PTC: -50°C to 150°C Power supply: 230VAC ±10%, 50/60Hz Rated current of relays (refrigeration, defrost, and fan): 8A / 220VAC Operating temperature: -5°C to 55°C Relative humidity: 10% to 90% RH (non-condensing) Storage temperature: -30°C to 85°C Input: Sensor Sensor length: 2M (including probe) Product Type: Temperature Controller Display Type: Digital Usage: Household Power Type: AC Power Style: Standing and Wall Hanging Display Size: 1.9 Inches and Under Color: Black Material: Plastic Size: 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 image and actual item. Measurement error allowed within +/- 1-3cm.