Functions of product: wireless remote door bell wireless fixed, many kinds of language for choose Remoted in long distance for fifty to eighty meters match the code with different frequency , stabilizations in functions Power supply: battery with 23A 12V, AA size or AAA size Wireless and facile; Anyone Can do . Anyone can use without troubling others especially without chiseing or disposing, so it doesn’t affect the decoration. Doing by yourself and quick installing , These all appear to be ingenious. When the music come up, you must be full of joy. This door bell can be installed anywhere, the button can be fixed or pasted . It is applicable in Bedroom, Office, Restaurant, Factory , Dormitory or any other place where need help. You won’t miss any visitors, the happiness spread through the digital world. packing details: 
60pcs/ctn.