NineLeaf 7PK Motion Sensor Door Buzzer — 918ft (280m) Range, 17 Ringtones, 4-Color LED, 5 Volume Levels

Overview: This NineLeaf motion-activated door alarm kit is designed for business and home entry points, providing anti-theft alerts and visitor notifications with easy installation and flexible power options. It supports a long transmission distance of 918ft (280 meters) and includes bright 4-color LED indicators and 17 selectable ringtones (including 4 retail welcome tones). Installation & placement: The receiver requires no wiring—just plug it into a power outlet and secure it with the supplied self-adhesive tape. Mount the motion detector to a wall and insert batteries before first use; angle the sensor carefully to minimize false triggers. For best results, use indoors only and avoid exposing the detector to direct sunlight or very damp environments (for example, rainforests). Sound & alerts: Choose from 17 melodies and set one of five volume levels to suit busy or quiet settings. A Silent Mode switches notifications to a powerful vibration alert for private or nighttime situations. Power & efficiency: The system uses fourth-generation power-saving technology to reduce battery changes. You can run the unit on batteries or recharge it via micro USB for added convenience. Applications & warranty: With a 918ft (280m) operating range, this door buzzer is suitable for shops, malls, offices, factories, hotels, clubs, homes, and villas. Installation is straightforward with adhesive mounting, and the product is backed by a one-year warranty for peace of mind.