Friedland D902 Door Bell-In-One [D902 FRIEDLAND]The Friedland bell in one is another back to basics bell with sound hitting 80dB at 1m This kit neeeds 2 x R20 / D type batteries (not included). This bell is powered by batteries only and is suitable for use with any unlighted bell push. For installation you will require 2 x R20 batteries, bell wire and a push. The overall length of the twin bell wire used for the installation from the bell to the pushbutton should not exceed 15 metres.
Friedland D902 Door Bell-In-One [D902 FRIEDLAND]
No specification details available.