Door Bell Chime Easy to install Wireless range of up to 100m 25 different melodies Plugs into any mains socket 2 push button transmitters Kingavon Plug In Wireless Door Bell Chime With 2 Bell Push | Dc106 Kingavon plug in digital wireless door chime is easy to install door chime simply plugs into any wall socket and is ready to use. No wiring is required and it has up to a 100m range with 25 available melodies to choose from. It comes supplied with 2 push button transmitters which require 2 x 12V 23A alkaline batteries and these are included. They are ideal for both front and back door installation. CE Approved. Kingavon supplying quality Lighting, household electrical and security products. Box Contents 1x Door Chime 2x Push Button 2x 12V A23 Battery