NineLeaf Motion Sensor Door Chime & Alarm — Motion-Activated Buzzer, 918ft (280m) Range, Anti-theft, 4-Color LED, 17 Tunes, 5 Volume Levels, Silent Mode Vibration, Easy Install — for Shops/Offices/Hotels, 8PK

Pack of 8 NineLeaf motion-activated door sensors and receivers designed for business and home use. The plug-in receiver needs no wiring—just insert into an outlet and secure with the included self-adhesive tape. Mount each detector on the wall, install batteries, and fine-tune the sensor angle to minimize false triggers. Note: intended for indoor use only; avoid direct sunlight and very damp environments such as rainforests. Customizable alerts: choose from 17 ringtones (including 4 retail store welcome melodies) accompanied by bright 4-color LED indicators. Adjust the sound with 5 volume levels or enable Silent Mode for a strong vibration alert when a quieter notification is required. Power and efficiency: built with fourth-generation power-saving technology to cut down on battery changes. Units can run on batteries or be recharged via micro USB for flexible power options. Performance and applications: wireless range between transmitter and receiver reaches up to 918ft (280 meters), making the system suitable for shops, malls, offices, factories, hotels, clubs, homes, and villas. Simple adhesive installation and a one-year warranty are included for added peace of mind.