Self-Powered Smart Wireless Doorbell: Long-Range, Battery-Free, One-to-Four Remote Call Button System

Introducing an innovative doorbell system that combines convenience with modern technology. This self-powered, smart wireless doorbell offers a long-range connection without the need for batteries, ensuring an uninterrupted and sustainable user experience. The system includes a flexible one-to-four remote call button setup, allowing you to customize your home or office entry points with ease. Reliable and efficient, it seamlessly integrates into any environment, enhancing your security and communication with visitors. Power supply mode: AC Voltage: 110-220 Ring: 60 songs to choose from, 5 volume levels adjustable to light only Power consumption: 1 Scope of application: Straight-line unobstructed distance of the vacant land is 150 meters Manufacture country: China Instructions included: No