1、No need to install, just plug it in and use it. °C/°F can be switched freely. 2、The design is very simple and does not require too many settings. It is very convenient for children and the elderly to control your home temperature at home, just set your target temperature. 3、You can easily calibrate the temperature of the device and set the hysteresis temperature. 4、The LCD screen with green backlight displays the current temperature, target temperature, clock/heating program, and provides a clear view even in dark environments. 5、Hold down the SET button and press the RESET button to easily delete all settings and return to the factory settings. 6、With child lock function, press and hold the LOCK button for 2 seconds to lock the device. It can also be used to control heating or cooling equipment.