What you need to know
What’s in the box?
(Click image to enlarge. Pictures for illustration only. Number of gangs and/or finishes might vary)
What does an electrician call this?
This is a 1-gang 2-way dimmer (Leading Edge or Trailing Edge)
Where is this used in the home?
A 1-gang 2-way dimmer is commonly used for controlling a single light source from one or two places.
Installation
THPG rotary switches are easy to install, but remember, the round backplate versions don’t fit onto standard British back boxes! Just follow the step-by-step pictures below or go to our THPG rotary switch installation page.Â
We used a European round box in the pictures but the procedure is the same for square boxes.
Wiring
Step-by-step
(Click gallery to enlarge. Number of gangs and/or finishes might vary)
Please refer to our Installation section for more installation advice, manuals and helpful videos.
Dimensions
Does this cover a standard british back box?
No, a 70mm round back box is required. Check the available options below.
How deep does the back box need to be?
This insert is quite deep, it needs at least 45mm. Check the available options below.























