Features: A useful temperature controller for controlling temperature intelligently. With large and clear LED dual display for better readability. Wide temperature measuring range -40~120 degrees (-40~248 Fahrenheit). Cooling and heating control, equipped with power supply cord. Delay protection function. Support brown-out storage(Set parameters is still valid after short circuit). Can be used for vegetable greenhouse, domestic water tanks, aquarium, aquaculture and other temperature-controlled systems to control temperature.      Specifications:      Color: Black Material: PC Working Voltage: 90V~250V Rated Current: 10A Power Consumption: ≤3W Power Consumption of Standing by: ≤0.5W Precision of Temperature Control: 0.1degrees Resolution: 0.1degrees Measurement Error: ±0.3degrees Control Range: -40~120degrees (-40~248Fahrenheit) Slewing Range of Temperature: 0.1~30 degrees(adjustable) Working Temperature: -20~70degrees (-4~158Fahrenheit) Working Humidity: 90% RH Non Condensing Temperature sensor: NTC 25degrees =10K B3435 ±1% (1.48m Line) Length of Power Line: 1.45m / 57.1in Relay: 10A / AC220V Item Size: 15.5 * 6 * 2.8cm / 6.1 * 2.4 * 1.1in Item Weight: 245.2g / 8.6oz Package Size: 21.5 * 11 * 3.5cm / 8.5 * 4.3 * 1.4in                  Packing list:            1 * Temperature Controller        1 * User Manual