Ⅰ. Product Description: Plug-in thermostat, digital timer plug-in, programmable digital plug with sensor, programmable digital timer, heating thermostat plug-in for household, aquarium Ⅱ. The temperature controller automatically switches between heating and cooling modes and controls heating/cooling by setting start and stop temperatures during operation. Ⅲ. The LCD screen can display the temperature control mode and four time control modes F01-F04, and there is also a temperature correction function, screen lock protection and memory function (all current settings are saved when the power is turned off). It has cycle time control, on time, off time and timer function. TIMER: Range: 0-99 hours 59 minutes, time accuracy: up to 10 minutes. Maximum load: 16A (2), 3680W. Ⅳ. 1.8 meter temperature sensor: The thermostat socket is equipped with a 1.8 wire temperature sensor to detect the temperature. -40?~+120?. Ⅴ. WIDE APPLICATION: The digital thermostat socket allows you to intelligently control temperature and time. Widely used in home wall heaters, as well as greenhouses, aquariums, carbon crystal heaters, thermostatic switches, portable air conditioners and smart aquaculture controllers. Ⅵ. CE marking is a declaration by the manufacturer of the product that the product meets the requirements of the European Commission Directives that apply to it.