【Relay Output, Easy to Use】 No wires required, just plug the device into this Temperature Controller Thermostat Socket and set the parameters, it will work as programmed. It has passed CE certification. Power supply: 230V AC; Output: 16A/230V max. The product comes with a 3m long probe for your convenience. 【Temperature Control Function with ±1% Accuracy】 Temperature control range: -40℃~120℃. Set the start temperature and stop temperature, it will control heating or cooling to work as programmed. (Start temperature is higher than stop temperature, cooling; start temperature is lower than stop temperature, heating). This thermostat socket also supports temperature calibration. 【Timing Function】This temperature controller socket has cycle timing and countdown functions. You can choose the cycle timer mode to control the device to work 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