You need Aqara Smart Home Central M2, Smart Home Central M1S or Camera Hub G2H to work. The Aqara H1 EU Smart Light Switch uses Zigbee 3.0, which features better stability, compatibility and more features, and is compatible with Apple HomeKit, Amazon Alexa, Google Assistant and IFTTT Control from anywhere: turn old lamps and lights into smart lights. The Aqara Smart Light Switch H1 EU allows you to remotely control existing lights and other devices via a home kit, Alexa or Aqara Home via voice or app. The Aqara H1 EU smart light switch is compatible with 86 mm square wall housings and EU round wall housings. (Note: not all double / double wall enclosures are comparable. Check the product size before purchasing.) Two-way switch configuration: combining the Aqara H1 EU smart light switch with other Aqara products can achieve multiple applications. With the Aqara H1 Wireless Remote Switch, you can easily operate the same lights from two or more locations without additional wiring. (Note: An optional H1 wireless switch is required for two-way configuration.) Wireless switch function: The Aqara H1 EU smart light switch can be part of the solution for your smart home. By converting to a wireless switch function, the switch can be automatically controlled with an Aqara motion sensor or Aqara wireless mini wireless switch while the switch button controls other devices.