Metal plate switches and sockets in a black nickel finish with no fixing screws visible, part of the Hamilton Hartland CFX range.
There is an internal plate which screws into your wall box (dry lining or galvanised), the cut out indicating the depth of the wall box required.
The final faceplate then clips onto the inner plate, leaving no screws visible.
The AX rated switches are rated for fluorescent or halogen or incandescent lighting, suitable for almost all applications.
Double Pole switches are generally used on single circuits, such as an electric shower, cooker, and any appliance supplying electricity in the Kitchen or Utility room (not light switches).
The only socket allowed in a bathroom is the shaver socket.
Isolated TV and satellite sockets, provide a surge protection between the aerial and the socket.