TP Link Tapo S210 (battery-powered) Smart Light Switch Smart Light Switch, 1-Gang 1-Way Remote Control - Instantly turn the light on/off wherever you are through the Tapo app. Voice Control- Manage your switch with voice commands via Amazon Alexa or the Google Assistant. Schedule - Preset a schedule to automatically manage devices. Away Mode - Automatically turn the light on and off at different times to give the appearance that someone is home. Tool-Free Battery Replacement - Easily replace batteries after installation, no need of other tools. No Neutral Wire Required - Super easy wiring. No neutral wire required. Hub Required - The Tapo Hub is required to support all smart features. Depth: 100.5 MM Remote Control - instantly turn the light on/off via the Tapo app, Schedule - preset a schedule to automatically Timer to create a countdown timer list for connected electronics Voice Control - manage your switch with voice commands via Amazon Alexa or Google Assistant. Away Mode - automatically turn the light on and off at different times to give the appearance that someone is home Low battery reminder - sends notifications when the battery power is low. Hassle free battery replacement - easily replace batteries after installation, no need for additional tools. No neutral wire required - super easy installation. Height: 55.5 MM Width: 91.5 MM