You can install this DiO wireless doorbell from Chacon in no time without having to pull any cables! It can easily be connected to a socket with the supplied plug. The doorbell is compatible with the DiO range, allowing you to program scenarios that activate when someone rings the doorbell. The light can be switched on automatically to simulate a presence and deter burglars while you are away. Choice of 38 melodies Volume control: 5 levels Dust and weather resistant Transmission range: 150m in open space LED flash light Indoor unit power supply: 220-240V AC