This wireless doorbell features a loud volume, 7-color vibrant light alerts, and a long-range, one-touch call function. Ring the doorbell, the volume is loud and clear, ensuring no missed calls. With four adjustable volume levels, it can be heard within a 150-square-meter area. No matter how large your house, you can be confident in not missing any visitors. The transmitter and receiver utilize wireless communication and signal transmission. At the press of a button, the receiver emits beautiful music and simultaneously flashes colorful lights, providing convenient nighttime hearing and vision. The low power consumption and environmentally friendly design require only four AA batteries (three for the receiver and one for the transmitter), providing a battery life of 3-5 months. It's suitable for a variety of environments and can withstand heavy rain, typhoons, and other weather conditions. The doorbell is easy to install and easy to use, and it's wall-friendly. The high-quality double-sided adhesive allows for simple, one-touch installation, ensuring a secure and durable fit. It can also be mounted with screws.