【Relay Output, Easy to Use】No wiring required, simply plug your device into this temperature controller thermostat socket and set the parameters, it will work as programmed. 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℃. By setting the start temperature and stop temperature, it will control heating or cooling to operate as programmed. (The start temperature is higher than the stop temperature, cooling; the start temperature is lower than the 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 operate in cycles, or choose other countdown modes to turn the device on or off. Setting range: 0 ~ 99 hours and 59 minutes. Please note that the temperature