ETvalley Plug-in Wireless Doorbell Kit with Battery Operated Receiver and One Doorbell Receiver and a Waterproof Bell, White with Blue LEDs We designed the wireless doorbell with modern and stylish design which will be perfect for your door step. We also created the doorbell receivers with elegant and simple design. The doorbell receiver was created to consume the minimum power possible, so dont worry about your electricity bill. We created the wireless waterproof doorbell with a large range 300 meters so you will be able to put the receiver wherever you want in your house. You will be able to choose your doorbell ringtone between the 52 different ringtones possible and you will have the possibility to adjust the level of sound volume, 4 different levels. Easy to install, you just have plug the receiver and put the battery into the doorbell and it is ready to operate.