* Electro-mechanical doorbell with "ding dong" sound * Wall mountable * Simple 2-wire installation * Requires 1 x 9v PP3 size battery (not included) or 8v 1 amp transformer, Byron 7770 or equivalent (not included) Byron Wired Door Chime in White
* Electro-mechanical doorbell with "ding dong" sound * Wall mountable * Simple 2-wire installation * Requires 1 x 9v PP3 size battery (not included) or 8v 1 amp transformer, Byron 7770 or equivalent (not included) Byron Wired Door Chime in White
