

Collingwood 250W LED Mains Grid Dimmer

Pay in 3 with Klarna
Rated five stars by thousands of customers since 2014 - see our full review history here
1 Year Warranty
Hassle-Free Returns
20+ Years of Experience
Free UK Delivery*
Dimming Without Replacing the Whole Switch Plate
If a bank of Collingwood downlights is already wired into a grid plate and you want to add dimming, this is the module that does it. It clips into a standard grid plate alongside other switches and dimmers on the same faceplate, so there's no need to change the plate itself, just add this module into an existing or new gang.
A Compact Plastic Module With a White Knob
The dimmer body is moulded plastic, finished in a neutral grey that sits quietly behind whatever grid plate it's fitted into. A white rotary knob is set into the front for adjusting the light level by hand, and the module comes with its own ring nut plus a grid plate insert, so everything needed to fit it into a gang is included in the box.
How It Works
- Handles up to 10 compatible Collingwood LED units on a single dimmer
- Has an adjustable minimum brightness setting, so you can set the lowest point before the LEDs start to flicker or drop out
- Needs a pattress box at least 35mm deep behind it, which matches most standard UK back boxes
- Built to BS EN 60669-2-1 for electrical safety and reliability
- Measures 64mm in length with a 42.5mm projection once fitted
Where It Works Best
This module suits any installation where Collingwood LED downlights are already on a grid plate and dimming needs adding without redoing the whole plate, a kitchen island run of downlights, an office fit out, or a hallway bank of lights that's currently switched on and off rather than dimmed. It's also a straightforward fix if you're troubleshooting flicker on an existing dimmer circuit rather than fitting a new one, our complete guide to why lights flicker covers every common cause and fix.
Collingwood: British LED Design Since 2002
Collingwood Lighting designs and manufactures its LED products from Sywell in Northamptonshire, and has specialised in LED technology since 2002. The brand states it was among the first to bring mains dimmable LED products to the UK electrical wholesale market, and this grid dimmer is part of that same dimming system built to work across its downlight range.
Good to Know
- Comes with a 1 year warranty.
- Made from plastic, weighing 0.1kg.
- Rated to control up to 10 compatible Collingwood LED units on a single dimmer.
- Requires a pattress box at least 35mm deep behind the grid plate.
- Moonlight Design recommends installation by a registered NICEIC electrician, as this is a mains wired accessory.
Questions People Ask
How many downlights can this dimmer control?
Up to 10 compatible Collingwood LED units on a single dimmer.
What's the adjustable minimum brightness setting for?
It lets you set how low the dimmer goes before the LEDs start to flicker or drop out, so you can find the lowest usable level for the specific LEDs on that circuit.
What size back box do I need?
A pattress box at least 35mm deep, which matches most standard UK back boxes.
Does this replace my existing grid plate?
No. It's designed to clip into a standard grid plate alongside other switches and dimmers already on the same faceplate, so the plate itself doesn't need to change.
We offer free standard delivery on orders within the UK Mainland* (an additional fee applies for the Isle of Wight, the Isle of Man, the Scottish Isles, parts of Scotland, Northern Ireland, the Republic of Ireland, the Channel Isles and International).
*Collingwood orders under £150 incur a delivery fee of £9.95 inc. VAT.
*Any order under £49 incurs a delivery fee of £9.95.

Specifications
What Our Customers Say About Us

