【IP68 Waterproof】: The wireless doorbell can withstand the harshest outdoor weather conditions such as heavy rain, snow, and scorching sun. We have tested it and put the doorbell in water. It shows that the doorbell transmitter can still be used normally after the water dries. 【150m Wireless Range】: The range of the doorbell receiver can reach a radius of 150m, suitable for apartments, villas, and gardens. Even if you are in the garden or on the second floor, you can hear the bell. And it will not interfere with other electrical signals in your home. 【No Battery!】: The design of our wireless doorbell with 2 receivers is environmentally friendly and practical. This doorbell does not have a battery. So you don't have to worry about replacing the battery. At the same time, it also contributes to environmental protection. 【Compatible Design】: We have studied most household sockets in Europe and designed the most compatible wireless bell size, which looks simple but delicate. Suitable for