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.You may also like Tuya Smart Home GSM + Intranet Alarm System — TFT Screen, Touch Keypad, RFID (2 Cards), APP Control, Voice Switching, Loud Siren.