Antique Wireless Doorbell Uk . Wireless doorbell waterproof transmitter 150m/500ft 2x dc receiver with blue light indicator silvery. (7) £19.99 free uk delivery. Libra+ Classic 100m Wireless Doorbell kit Brass Push/Tudor Oak, from doorbellworld.co.uk The push button i mean. The wireless extender required to send the wireless signal is incorporated within the wooden plinth, and is internally linked. Our doorbells simply fits onto the inside of your front door and gives a maintenance free, reliable service.