Classic recessed switch with black porcelain frame and black porcelain knob in a design that was common in Europe during the first half of the 20th century.

This switch has a so-called staircase function, which means that it can be used as a regular switch to turn a light source on and off. It can also be used in rooms, corridors or staircases to switch on a light source at one end of the room and off at the other end. If staircase switching is required, two switches with staircase function are needed. If a light source is also to be controlled from a third switch, this must have a cross function.

Surface-mounted spring-loaded double dimmer in black porcelain with brass knob, a design that was common in Europe during the first half of the 20th century.

The double dimmer has a so-called crown function, which means that it is used to dim two separate light sources. The supplied dimmer switch is placed in appliance boxes in the wall.

For surface mounting on wood paneling or other flammable material, an insulating plastic base plate should be used as additional fire protection.

Recessed double dimmer in white porcelain with brass knobs in a design that was common in Europe during the first half of the 20th century.

The double dimmer swivels in two directions and has a so-called crown function, which means that it is used to dim two separate light sources.

The supplied dimmer switch is placed in appliance boxes in the wall.

Recessed double dimmer in black porcelain with brass knobs in a design that was common in Europe during the first half of the 20th century.

The double dimmer swivels in two directions and has a so-called crown function, which means that it is used to dim two separate light sources.

The supplied dimmer switch is placed in appliance boxes in the wall.