Power supply: 230VAC ±10%; 50/60Hz Rated current of the relays (refrigeration, defrost, and fan): 8A/220VAC Use temperature: -5°C to 55°C Relative humidity: 10%–90% RH (non-condensing) Storage temperature: -30°C to 85°C Input: sensor Sensor length: 2M (including the probe) Temperature Controller Display Type: DIGITAL Usage: Household Power Type: Charger Style: Standing and Wall Hanging Display Size: 1.9 Inches & Under Color: Black Material: Plastic Size: 77 x 34.5 x 58mm Package Contents: 1 x ETC-974 Digital Temperature Controller 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 to be slightly different from the real thing. The measurement allowed error is +/- 1-3cm.