Relay output, easy to operate: CE certified. No cables required, just connect the device to this thermostat socket temperature controller and adjust the settings, it works as programmed. It has passed CE certification. Power supply: 230 V AC; Output: max. 16A/230V Temperature Control Function with 1% AccuracyTemperature control range: -40~120. This digital temperature control socket is easy to program. Set the start and stop temperature to make the heater or radiator work as programmed. (Starting temperature > Shutdown temperature, cooling, start temperature < stop temperature, heating) This 230V temperature controller socket also supports temperature calibration. Timing Function This temperature control thermostat socket has the functions of cycle timing and countdown. You can choose the cycle timer mode to control the device to run in cycles or choose other countdown modes to turn the device on or off. Setting range: 0~99 hours 59 minutes Please note that the temperature control function and time cannot be used at the same time. Other Functions NTC temperature sensor 3m; 5 modes to choose (temperature control mode; F01 cycle timer mode; F02 ON countdown mode, F03 countdown mode, F04 ON countdown mode and countdown off). Large LCD display. Temperature calibration. Reset function Data storage function that allows you to save all set settings after power off. Wide Range of Applications This thermostatic plug with temperature sensor is widely used for greenhouse, reptile, incubator, terrarium, freezer, refrigerators, heaters, refrigerators, home brewing, vivaria, fermentation, heating mat and other temperature controlled systems. It can also be used as a timer for cycle calendar and countdown.