NineLeaf Motion Sensor Alarm Door Buzzer — 9PK, 918ft (280m) Range, 17 Ringtones, 5 Volume Levels, 4-Color LED, Anti-theft, Easy Install for Shops & Offices

Easy, tool-free setup: the receiver requires no wiring—just plug it in and use the supplied self-adhesive tape to mount. The motion detector mounts to a wall; insert batteries and set the sensor angle before first use to minimize false triggers. Note: for indoor use only—do not expose to direct sunlight or very damp environments (such as rainforests). Sound & visual options: choose from 17 built-in ringtones with 5 adjustable volume levels and bright 4-color LED indication. The unit also includes 4 retail-store welcome melodies so you can tailor the alert tone to your location. Silent mode with vibration: when silence is preferred, activate Silent Mode to receive a strong vibration alert — ideal for nighttime or quiet settings where audio alerts would be disruptive. Power & efficiency: equipped with advanced fourth-generation power-saving technology to extend battery life. The system supports both battery operation and micro USB power, allowing convenient recharging whenever needed. Coverage & applications: wireless communication between transmitter and receiver reaches up to 918ft (280 meters), making it suitable for stores, shopping malls, offices, factories, hotels, clubs, homes, villas and more. Includes self-adhesive tape for straightforward installation and comes with a one-year warranty for added peace of mind.