[IP68 Waterproof]: The battery-free radio doorbell withstands the harshest outdoor weather conditions such as heavy rain, snow and scorching . 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 gardens. Even if you are in the garden or on the second floor, you can hear the . And doesn't interfere with other electrical signals in your home.[No battery ]: The concept of radio with 2 receivers is environmentally friendly and comfortable living. This doorbell has no battery. So you 't have to worry about replacing the battery. At the same time, it also helps the environment.[Compatible Design]: We have researched of the household electrical outlets in Europe and designed the compatible radio size that looks simple . Suitable for households in Europe. And the installation of the doorbell is very convenient.[Multiple ringtones and volume]: You can from 37 types of ringtones and music. customers the "ding ".Plug Type:EU Plug,it applies to Indonesia, , , , and so oncolour:BlackMaterial:ABSPackage Contents:1 x transmitting device2 x receiving device1 set x installation accessoriesOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.