NineLeaf Motion Sensor Door Buzzer 20PK — 918ft (280m) Range, 17 Ringtones, 5 Volume Levels, 4-Color LED, Silent Vibration Mode — for Shops, Offices, Hotels, Anti-theft

Easy, no-wires setup: The receiver simply plugs into a standard outlet—no wiring needed—and can be secured with the included self-adhesive tape. Mount the motion detector on a wall, install batteries, and fine-tune the sensor angle to prevent false triggers. Note: For indoor use only; avoid placing the unit in direct sunlight or extremely damp environments (e.g., rainforests). Customizable alerts: Choose from 17 different chimes (including 4 retail welcome tones) and use the bright 4-color LED indicator to match your environment. Volume is adjustable across 5 levels so you can set the sound for busy retail spaces or quieter offices. Silent Mode with vibration: When discretion is required, activate Silent Mode to receive a strong vibration alert—ideal for nighttime shifts or quiet areas where audible notifications would be disruptive. Power options & efficiency: Built with fourth-generation power-saving technology to extend battery life and reduce replacements. The system supports standard battery operation and can also be recharged using a micro USB connection for flexible power management. Long-range coverage & applications: The transmitter and receiver communicate up to 918 feet (280 meters), making this set suitable for stores, malls, offices, factories, hotels, clubs, homes, villas and other commercial or residential entrances. Its anti-theft alert functionality helps monitor entries and improve security. What’s included & warranty: Self-adhesive tape is provided for quick mounting. Product comes with a one-year warranty for added peace of mind.