Battery-Free Wireless Smart Doorbell – Self-Powered with Four-to-One Call Button

Experience a new level of convenience and eco-friendliness with this innovative wireless smart doorbell. This self-powered device requires no batteries, ensuring sustainability and ease of use. It features a four-to-one call button, allowing it to connect seamlessly with multiple receivers for optimal coverage throughout your home. Enhance your home security and streamline visitor notifications with this cutting-edge, user-friendly doorbell solution. Power supply mode: AC Voltage: 110/220 Ring: 5-speed volume 60 songs (adjustable mute) Power consumption: 1 Scope of application: Straight-line distance of 150 meters in the open space Manufacture country: China Instructions included: No