Relay output, easy to use No wires required, just plug the device into this thermostat socket and adjust the settings, it will work according to the schedule. Food : 230 VAC; Exit : Maximum 16A/230V. This product is equipped with a 3m long probe for easy operation. [Temperature control function, accuracy 1%] Temperature control range temperature : -40~120. Set the start temperature and stop temperature, it will control the heater or cooler to work according to schedule. (If the start temperature is higher than the stop temperature, it is cooling; if the start temperature is lower than the stop temperature, it is heating). This thermostat socket also supports temperature calibration. [Timing Function] This temperature control socket has cycle timing and countdown functions. You can choose loop timer mode to control the device to cycle, or you can choose other countdown modes to turn the device on or off. Adjustment range : 0 to 99 hours and 59 minutes. Please note that the temperature control function and the timer function cannot be used at the same time. More functions: 5 modes to choose from (temperature control mode, F01 cycle timer mode, F02 countdown mode on, F03 countdown mode off, F04 countdown on and countdown off). Large LCD screen. Temperature calibration. Reset function. Data storage function, all set parameters can be saved after power off. Wide range of applications: This temperature control socket is widely used in temperature control systems such as greenhouses, reptiles, incubators, glass containers, freezers, refrigerators, heaters, refrigerators, home brewing, terrariums, fermenters, heating pads, etc. It can also be used as a loop and countdown timer. Product size: 120*58*39mm