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 in time and sleep peacefully Door 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 security Real-time remote monitoring,whenever and wherever you are,once Door/Window Sensor detects external objects or animals,you receive a notification by smart phone Wide Applications,apply the smart door/window sensor to different scenes,your bedroom,garage,bathroom,garden and anywhere you like Tough 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 time Note: Zigbee model needs to be paired with Zigbee gateway Communication method:Zigbee Color:White Material:ABS Package Contents: 3 x Door Window Sensor 3 x adhesive tape 3 x card removal pin 3 x English manual Only 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.