This bell transformer module is a great addition for your ESR domestic consumer unit, and is ideal for leading safe levels of power through your doorbell system.
This bell transformer will use 3 modules/ways on your ESR consumer unit rail bar, and will transform 220V power into 12V/8V power that is safe to use with a doorbell system.
Bell transformer module
Easily installed in your ESR modular consumer unit
Safe and reliable product
Modular size: 3 Module/way
These modules are ideal for use with a 17th Edition Consumer Unit from ESR