Ring Transformers, Bases and Cymbals, Panel Type Sockets and Special Bases

It is used to make a lighting circuit "ON" and "OFF" based on photocell switches and light conditions (sunrise, etc,), 

In other words, panel type dimmers should be used with liht buttons without luminaires, It also works at the last level set after any power failure or shutdown, 

You can mount the products such as System Armada, Osmosis signaling and control products, space cover with rail on special rail bases,