Great fun - so novelty wireless doorbell! It is wireless and easy to install, it won't effect the indoor decoration. It's strong anti-interference system, avoid false ringing and miscommunication among users. This doorbell button is also a wonderful gift idea. The wireless doorbell is easy to install as it does not require any wiring or electronic know-how. Simply fix the transmitter outdoors, and have the parrot receiver indoors within 120 meters, and the loud speaker will sound every time the wireless doorbell is pushed. What's more, this digital wireless doorbell can encipher data, avoiding signal interference between near doorbells. You can use batteries to operate this doorbell button. Just make your home that much more interesting with great wireless recordable doorbell! So what are you still waiting for?