Whenever a person is ,there are always unsafe and uncertain things that make feel uneasy,there are door and window sensors can inform the status of doors and windows in time and sleep peacefullyDoor window sensor zigbee,you can easily control the interior of your home or office with no need to install any tools Easy installation with double-side tape,simply anywhere you like to protect your house securityReal-time remote monitoring,whenever and wherever you are,once Door/Window Sensor detects external objects or animals,you will receive a notification by smart phoneWide Applications,apply the smart door/window sensor to different scenes,your bedroom,garage,bathroom,garden and anywhere you likeTough and ,the door sensor is made of high-quality abs plastic,which is and has a long service life,it can be used for a long timeNote: Zigbee model needs to be paired with Zigbee gatewayCommunication :ZigbeeColor:WhiteMaterial:ABSPackage Contents:1 x Door Window Sensor1 x adhesive tape1 x card removal pin1 x English manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.