NineLeaf Motion Sensor Door Alarm — Anti-theft Door Buzzer for Business Entry, 918ft (280m) Range, 4-Color LED, 17 Ringtones, 5 Volume Levels, Silent Vibration, Easy Install — 5PK

Plug-and-play receiver with a battery-powered motion detector makes setup fast and tool-free: insert batteries into the sensor, plug the receiver into an outlet, and secure components with the included self-adhesive tape. Position and tilt the detector so the sensing angle minimizes false triggers. This system is intended for indoor use only — avoid direct sunlight and humid environments (e.g., rainforests). The unit’s sound options include 17 distinct ringtones (four preset retail welcome tones) and adjustable volume across 5 levels, while bright 4-color LED indicators provide visible alerts. For quiet settings or overnight use, activate Silent Mode to receive a strong vibration alert instead of an audible chime. Power is efficient thanks to fourth-generation energy-saving technology, and the sensor can run on batteries or be powered/recharged via micro USB for greater flexibility. With a communication range up to 918 feet (280 meters) between transmitter and receiver, this alarm is suitable for shops, malls, offices, factories, hotels, clubs, homes, and villas. Installation is straightforward, and the product includes a one-year warranty for added peace of mind.