Wireless Connectivity: Easy to install with no wiring required, suitable for all types of residential and commercial . Advanced Infrared Induction: Utilizes the latest infrared technology to accurately detect movements, enhancing your security and convenience. Motion Detector: Efficiently senses any motion within its range, promptly alerting you with your chosen voice message or song. Versatile Melody Selection: Features built-in songs, allowing you to customize the chime according to your preference or occasion. Ideal for Use in Various Locations: Perfect for homes, offices, and stores, this doorbell enhances security and welcomes visitors with charm., Weight: 0.24691773344 Pounds, Manufacturer: Aisuoka