Honeywell Home Ding Dong Classic Wired Doorbell u2013 White, D117 Newnn--Classic wired chime that should be mounted vertically on a wall, ideally at 2 m high, for best sound coveragenn--Loud chime sound, suitable for most homes. Range 60 m 80dB at 1 m 2 tunes optionsnn--Powered by transformer 8 V1A for example Honeywell Home D753 or D780 or batteries 4 x 1.5 V LR14nn--When battery-operated, the doorbell can be mounted up to a maximum of 15 m from the push when transformer operated, it can be mounted up to 60 m from the pushnn--All fixings are included in the packagennHoneywell Home Classic Wired Doorbells offer traditional styling with a choice of sounds and can be powered by batteries or from an external transformer. The doorbells are easy to install and are backed up with a two year guarantee. Loud enough to be heard throughout the house, but suitably quiet to be easy on the ear and not scare pets and young children, this fixed wall-mounted chime can be easil.