Control from Anywhere – Control all your radiators in each room from your phone; No more guessing if you left the heating on; No more heating an empty room Saving Energy Made Easy- The Kasa Smart Thermostatic Radiator Valve allows you to set heating schedules based on your daily routines to make heating more efficient and save your money Hands-Free Voice Control- Ask Alexa or Google Assistant to fine-tune your home’s temperature; No need to get up from the sofa Frost Protection - Keep your pipes unfrozen and your house safe; With easy installation, Just simply replace your old radiator valve with Kasa and follow the step-by-step in-app guide Kasa APP Requirements: Version 3.1.4 on IOS or Version 3.1.1 on Android (Doesn't work with Tapo) Note-Check your existing Radiators valve carefully to ensure the compatibility, for noisy issue-try turning on “Night Mode” in the setting, because after switched to night mode, the valve opening frequency will be reduced, so the noise is reduced Geofencing for Free: Introducing geofencing support-your home warms as you approach and cools when you leave; No manual tweaks required just seamless comfort and convenience Device Group Control: Group several smart radiator valves and control them with one tab; Ideal for larger room with more than one radiator External Temp Sensor Supported: With external temperature sensors (Tapo T310 or T315); KE100 adjusts heat based on your space not just near the radiator Open Window Detection: KE100 now auto-shuts the heat and enables Frost Protection when the connected window and door sensor (Tapo T110) activates; Enjoy comfort; energy savings and peace of mind