Remotely Dim & Control Lights, Customizable Scheduling & Timers, Away Mode, 2.4 GHz Wi-Fi Connectivity, Tapo App for iOS & Android, Matter Compatible, Use with Amazon Alexa & Google Assistant, Use with SmartThings & Siri, Neutral Wire Required for Operation. Remotely dim and control your lights from anywhere with the Tapo S505D Smart Wi-Fi Dimmer Light Switch & Dimmer (Matter) from TP-Link. Thanks to Wi-Fi connectivity you'll be able to set light schedules timers and scenes that best suit your needs with the Tapo app for iOS and Android. Away mode turns your lights on and off at random intervals making it appear that your home is occupied.Compatibility with Amazon Alexa Google Assistant SmartThings and Siri enables seamless voice commands. Additionally Matter compatibility enables you to integrate the S505D into you favorite Matter-certified ecosystem for a unified smart home. A neutral wire is required for installation.