Wireless Motion Detection, Tapo Hub Required for Operation, 23′ Motion Detection Range, Smart Automation, 922 MHz Wireless Frequency, Tapo App for iOS & Android, Powered by Included CR2450 Battery, 1-Year Battery Life, Use with Amazon Alexa. Implement motion detection in your home with the Tapo T100 Smart Motion Sensor from TP-Link. When paired with the required Tapo Hub (available separately) this battery-powered sensor enables you to receive instant alerts when motion is detected from up to 23′ away and through a 120? view. In addition you’ll be able to automate compatible Tapo devices such as smart bulbs to power on based on your movement and schedule. Remote management is via the Tapo app for iOS and Android.Compatibility with Amazon Alexa enables seamless voice control.