Wireless Doorbell, Self-Powered Doorbell, No Battery Required, Cordless Doorbell, 150m Range, Waterproof Push Button with 38 Chimes, 4-Level Volume and LED - White

General description This wireless doorbell is self-powered, requiring no wires or batteries, which protects the environment and saves you money. When the transmitter is pressed, it generates electricity on its own and sends a stable signal to the receiver. This eliminates the hassle of changing batteries and the risk of damaging your wall or doorbell. Technical specifications Transmission power: self-powered Doorbell receiver power supply: AC 110V-230V, 50/60Hz Receiver power consumption: 0.25W Chimes: 38 melodies Volume levels: 4 levels Transmission range: up to 152m (in open area) Operating frequency: 433 MHz Operating temperature: -4°C to 140°C Installation Simply plug the mini receiver into an outlet and attach the transmitter to a wall using the included accessories, which consist of 2 screws and a piece of tape. Usage This doorbell can be used in various settings including homes, apartments, schools, country houses, and offices. It features 38 ringtones and 4 volume levels (including mute) to suit your personal taste. The memory function ensures that the doorbell remembers the last settings after a power outage. Other information Range in the presence of multiple obstacles: up to 152 m (500 ft) Range in open areas: up to 305 m (1,000 ft) No crosstalk or false alarms due to strong penetrating power and anti-interference technology This battery-free wireless doorbell makes a lovely gift for any home or business owner.