[IP68 Waterproof]: The battery-free radio doorbell withstands the harshest outdoor weather conditions such as heavy rain, snow and scorching sun. We tested it and put the doorbell in the water. It shows that the doorbell transmitter can still be used normally after the water has dried. [150M radio range]: The range of the doorbell receiver can reach a radius of 150m, which is suitable for apartments, villas and . Even if you are in the garden or on the second floor, you can hear . And doesn't interfere with other electrical signals in your home. [No battery!]: The concept of our radio bell with 2 receivers is environmentally friendly and comfortable living. This doorbell has no battery. So you don't have to worry about replacing the battery. At the same time, it also helps protect the environment. [Compatible Design]: We have researched most of the household electrical outlets in Europe and designed the most compatible radio bell size that looks simple but nice. Suitable for most households in Europe. And the installation of the doorbell is very convenient. [Multiple ringtones and volume]: You can choose from 37 types of ringtones and music. Most customers choose the "ding ". Plug Type:EU Plug,it applies to Indonesia, Germany, France, , Italy and so on colour:Black Material:ABS Voltage: AC220V Package Contents: 1 x transmitting device 2 x receiving device 1 set x installation accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.