Description: 3 working modes-1. automatic mode or manual mode, under unlock state,set the temperature, via NTC sensor, when actual temperature lower then setting temperature,it will close heating contact and open cooling contact( display),when it is higher,it will close cooling contact and open heating contact( disappear); 2. Holiday mode, Long press to access setting to confirm working as holiday mode.Set from 1 to 30 days(countdown from holiday beginning,after holiday ending will return to work automatic mode); 3. Temporary manual mode, Under automatic mode and unlock state ,press , to set access temporary manual mode,you can set required temperature; Time Setting - short press to choose the setting data of Minute, Hour, Week; Children lock via long press for 5 sec; WiFi control, Voice control; 0.5℃ Accuracy Calibration - you can set your own temperature calibration between -9℃-+9℃, Temperature control return between 0.5-5℃; Weekly 6 times period programming setting - under power-off state, long press "SET"enter into advanced options, then short press “ SET“ switch to AC option can choose 5+2,6+1,7 modes, default mode is 5+2 Instruction installed, please take care not to install it to the wall corner, door / window side or behind the door or in such unheated area as exterior wall. Avoid hot/ cold air duct, radiator, flue or thermal pipe; Specification: Power: 230Vac 50/60HZ Display accuracy:：0.5°C Probe sensor:：NTC(10k)1% Running program: 7 day Contact capacity:：3A/250V(WW);16A/250V(WE) Working environment temperature:：0~90°C Range of temperature display:：0~40°C Range of temperature adjustment:：5~35°C Size：86 x 86 x 27 mm/ 3.39 x 3.39 x 1.06inch Package Includes: 1 Piece Thermostat