Whole-house heating automation: Add the thermostat of each room to the group to achieve group control. You can also choose the room-by-room control, to set different temperatures in different rooms. Multiple modes switchable: Offer a of different modes to suit your various needs. The mode can be switched by app or key, even if is disconnected, the mode can be switched. ECO mode: When the energy-saving mode is turned on, the thermostat can maintain the temperature at the energy-saving temperature to save energy . Window opening detection: After the window is opened, during the heating process, if the device detects that the room temperature more than 1.5 C within 5 minutes, the device stops heating. Frost proof mode: After frost protection mode is turned on, the thermostat continues to work to maintain the temperature of your home at 7 C, while the holiday mode can set the time period to be turned on to protect your home from frost.<br><br>Child lock function: In order to avoid the danger or waste of electricity caused by children touching the switch by mistake, the child lock can be activate by App only and deactivate manually or by App. Temperature calibration: In case of the temperature variation between the floor and the air, you can set the calibration value by App, to make sure the final temperature reaches your perfect value. pilot thermostat: A: the version without power monitoring. Wireless Protocol Type: 802.11b/g, Wi-Fi(2.4GHz) Storage temperature: 0C to 40C, indoor use only Operating temperature: -20C to 70C Power supply: 230VAC 50Hz Protection level: Ip20 Sensor: 10K 1% 3380 10CM Compatibility: Compatible with all Class II electric radiators, equipped with Pilot Wire technology Colour:White Material:plastic<br><br>Packa Contents: 1 x Wifi Smart Thermostat<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.