Contact Motion Sensor Light Switch: Make your home a smart home with hey! door/window sensor motion detectors, and turn smart lights and other smart home gadgets on and off just by opening and closing doors/windows. House Alarms Security System: A door motion sensor alarm is essential for home alarm systems. Improve door security with your own burglar alarm system. Get instant home alarm alerts and easily set up trigger functionality with the hey! app. Discrete Wireless Alarm System Smart Home Devices: Keep things clutter free with a hey! smart motion sensor for doors. Because it's battery powered (2 x AAA) the 5V smart sensor doesn’t require any complicated or unsightly wiring work. Alexa/Google Smart Device Contact Sensor: This Wifi door sensor is compatible with Amazon Alexa and Google Home, and doesn’t need a separate hub to be integrated. To control multiple sensors on your smartphone, all you need is 2.4Ghz Wifi connection and an iOS/Android device with up-to-date software. Easy Smart Detector Set up: Simply install in place with the adhesive tape, connect directly to your Wifi router, and you're good to go. With the clear written setup guide, your smart devices will be set up in as little as 10 minutes. Includes: contact sensor (made up of two parts), 2x AAA Batteries, adhesive tape., Weight: 0.0881849048 Pounds, Manufacturer: hey!