Netatmo Tags, Doors and Windows Security Sensors for the Welcome Camera 3 security sensors that detect opening and closing of any door/window and send notifications to your smartphone Vibration detection: alert you even before an intrusion occurs Open/close status sensors: let you know if you accidentally left a window or the garage door open Easy to install: simply stick the one-piece Tag on any type of door or window / Convenient: works up to 260 feets away from the Welcome camera / Resistant: waterproof for outdoor and indoor use Only works with Netatmo Welcome camera. Sold separately