NineLeaf 4-Pack Wireless Motion Sensor Doorbell — Color Light Alert, 5 Modes, 36 Ringtones, 280m/918ft Range for Shops, Hotels & Offices

This NineLeaf 4PK motion-sensor doorbell combines motion detection and a multi-function chime unit for business and home use. It supports five operating modes: Welcome, Doorbell, Alarm, Color Light and Lighting Mode. Motion in the sensor’s coverage will trigger alerts to the paired receiver, helping protect entrances, walkways and other monitored areas. Audio and light options: Welcome mode offers 5 selectable languages. Doorbell mode includes 36 selectable ringtones. Welcome/Doorbell/Alarm modes provide 4 volume levels (Loud / High / Middle / Low) adjustable from 113~25dB. Color Light and Lighting modes are silent and feature 4 brightness levels; Color Light mode also has 4 selectable colors — useful for hearing-impaired users or sleeping infants. Range and detection: Wireless transmission reaches up to 280m/918ft, and the motion detection distance is approximately 2~8m/6.6~26ft, keeping you informed of nearby activity. Flexible pairing and placement: DIY pairing lets you mix and match transmitters and receivers to suit your setup. Each receiver can pair with a maximum of 32 infrared, vibration, magnetic, and other wireless sensor accessories, and with up to 8 remote controllers. Install the receiver indoors and position sensors at doorways, mailboxes, driveways, paths, apartments, offices, hotels, stores or other indoor locations. Installation and power: The receiver mounts with self-adhesive backing; sensors are wall-mounted. Units can be powered by batteries or via micro USB (batteries not included). Read the manual before first use and adjust the sensor angle to reduce false alarms.