Suitable for lights that are controlled at three different points, one of the switches in the lighting circuit must be an Intermediate Switch (with four terminals) enabling all three switches to be connected together.
Please note - cannot be used as a 2 way switch!
Recommended back box depth: 35mm
Dimensions: 86mm x 86mm x 28mm (single Plate)
Dimensions: 156mm x 86mm x 28mm (double Plate)