Experience the convenience and simplicity of our Wireless Ringbell. With its super learning code, the transmitter button can be easily matched with the receiver, allowing for unlimited matching options. Plus, the transmitter is designed with a screw chuck, achieving waterproof and dustproof protection. The transmitter uses a 23A12V alkaline battery, while the receiver operates on 3 AAA alkaline batteries, allowing for cordless use. With a receiving distance of 300 meters in open areas, you can easily hear the doorbell ring from a distance.