Brass Doorbell button, 2.5" (63mm) diam, Flush Fitting with full Brass centre button. It can run on 8-12v power by battery or transformer with a 2-wire set up. 

The Byron 2204Bs is a classic, wired bell push. These pushes can also be linked into Wired to Wirefree Extenders enabling them to be used with wireless doorbells.

• Bell Push Size : 74 x 32 x 20mm.
• For use with battery or transformer powered doorbells

Bell Push Features:
This universal bell push button can be connected to all wired doorbell systems.

In the Box:
Brass Finish Bell Push, fixing pack & instruction manual.