The Eve Smart Door & Window Contact Sensors detect whether your windows and doors are open or closed to avoid wasting energy. The smart contact sensors can also automatically turn off other HomeKit compatible devices when a status changes, such as a window being opened. Other highlights: - Create statistic evaluations - Apple HomeKit support (iPhone, iPad, Apple Watch) - Automatic integration into the Thread network - Privacy protected* - Quick, easy installation without internet bridge System requirements: - iPhone, iPad with current iOS/PadOS version - Automation and control on the go requires a HomeKit compatible device such as HomePod or Apple TV as a control hub *Eve does not collect personal data and does not have a cloud. Tip: Complement your smart energy management with the Eve Energy smart plug and Eve Thermo smart radiator thermostat!