Premium Portable Wireless Door Chime and Push Button Plug-in Type Digital Sensing Doorbell with Waterproof Doorbell Button (1 receiver and 1 button)(White) IP44 Rated Push Button, Waterproof Dustproof ,Painstakingly Made to Withstand Rain, Wind and Other Elements Solid Bulit Quality: Each 1byone door chime kit is equipped with ABS environmental protection materials,long life garuanteed. Lead-free,Non-toxic Laud Enough--4 levels adjustable Volume from 25db to 80db; volume control nice and Easy to install Classic white. Intelligent digital remote control doorbell, ideal for homes, offices, guest rooms, hotels, hospitals etc Convenient, double-side stickers,long lifetime,easy to DIY, Super power-saving mode