When you're looking for reliable, fire-rated LED downlights that offer strong performance, quick installation and long-term peace of mind, Collingwood Lighting stands out as a top choice for UK electricians, contractors and homeowners alike.
These recessed lighting solutions provide high efficacy, full compliance with Building Regulations Parts B, C, E, P and L, IP65 protection (from below) for bathrooms, insulation coverability and proven 70,000-hour LED lifetimes.
From basic fixed units for everyday rooms to switchable and tiltable models for flexible designs, the range handles it all.
In this blog we'll provide a clear breakdown of the three main Collingwood downlights models — H2 Lite, H2 Pro and H4 Lite — to help you pick the perfect fit.
If you're unsure about spacing, read our guide on how many downlights you need for your room
The H2 Lite is Collingwood’s most installed entry-level downlight, trusted in millions of UK homes and projects. It’s a fixed, TRIAC-mains-dimmable, fire-rated LED recessed light built for speed and no-fuss performance.
Key features:
- Shallow 46 mm depth — ideal for tight ceiling voids
- Patented Easy-Fit connector for fast first- and second-fix wiring
- Insulation coverable (rolled or blown)
- 114 lm/W efficacy, ~460–490lm output from 4.3W
- Integrated bezels in Matt White, Brushed Steel or Matt Black
- 3000K, 4000K or CCT (colour switching) models
- IP65 (from below), IP20 (above)
- 55° beam angle
- 10-year warranty
When and where to use the H2 Lite
Opt for this model in standard flat ceilings — living rooms, hallways, bedrooms, kitchens or bathrooms (Zone 1 compliant). It’s perfect for budget-conscious projects, new builds, refurbishments or quick retrofits where you want a straightforward “fit-and-forget” downlight without on-site adjustments.
The H2 Pro takes the H2 platform further with on-site adjustability that reduces stock needs and handles last-minute changes.
It remains a fully fire-rated, dimmable fixed downlight but adds:
- Driver switches for wattage (5–7W)
- Colour temperature (CCT, 3000K or 4000K).
- Efficacy up to 130 lm/W,
- Detachable driver
- Twist-and-lock bezels
- 2-part push-fit loop-in/loop-out connector
Ideal applications
Ideal for when flexibility matters — open-plan spaces, spec homes, commercial receptions or jobs where clients may want warmer/cooler light or brighter output after first fix.
Collingwood H2 Lite vs H2 Pro: What’s the Difference?
Higher output per watt, multiple CCT and lumen options from one unit (effectively 6-in-1), plus integrated emergency options on some models. It carries a 7-year warranty.
Compare the H2 Pro and H2 Lite in more depth in our comparison blog
The H2 Sense adds intelligent automation to the H2 family with a built-in PIR (passive infrared) occupancy sensor, making it ideal for hands-free, energy-efficient lighting without separate sensors or visible extras.
It’s a fixed, non-dimmable fire-rated LED downlight with adjustable settings for hold time (30 seconds to 15 minutes), sensitivity (10cm to 2m range), and lux level (to prevent activation in daylight). Key features include:
- Built-in PIR sensor for automatic on/off based on movement
- Switched live-out functionality — one master unit can trigger additional lights or circuits
- Colour switchable CCT (2700K, 3000K, 4000K) via rear switches
- High efficacy up to 113 lm/W, ~600–675lm output from 6W
- Fire-rated, insulation coverable, IP65 (from below)
- 55° beam angle, shallow depth for easy install
- Bezel sold separately for custom finishes (Matt White, Matt Black, etc.)
- Adjustable PIR settings on the back of the bezel
When and where to use the H2 Sense
Choose the H2 Sense for spaces where lights are often left on unnecessarily — hallways, bathrooms, utility rooms, garages, or en-suites in homes and offices. It’s especially valuable in energy-conscious projects, rental properties, or commercial areas aiming to cut wastage while maintaining a clean, integrated look (no bulky external sensors).
The H4 Lite stands apart with its tiltable design — swivel up to 20–25° to aim light precisely.
It uses similar CSP switchable tech (wattage 4–6W, CCT including 2700K via rear switches), delivers 108–130lm/W, fixed 55° beam angle and matches the range’s fire rating, insulation coverability, IP65 (below) and TRIAC dimmable performance. Large piano-key terminals speed up wiring.
Distinct use case
Choose the H4 Lite for vaulted/sloped ceilings, artwork highlighting, kitchen islands, bathroom mirrors or feature walls where fixed lights create shadows. Ideal when joist layouts limit positioning — still achieves 30/60/90-minute fire ratings in solid timber.
It’s the directional sibling to the fixed H2 family, solving angle challenges without compromising quality.
All models deliver core strengths: fire rating, insulation coverability, IP65 wet-area suitability, shallow build and long-life LEDs.
Fixed position? → H2 Lite or H2 Pro
Adjustable tilt needed? → H4 Lite
On-site CCT/wattage flexibility? → H2 Pro (or H4 Lite CSP)
Energy-saving automation (built-in PIR sensor)? → H2 Sense
Budget + simplicity? → H2 Lite
Whether refreshing a kitchen as a homeowner or specifying hundreds of units as a contractor, Collingwood offers recessed lighting engineered for real UK installations.
Ready to choose? Explore the full Collingwood downlights range today — trusted for reliable, compliant performance year after year. Alternatively, read our guide on the best Collingwood Outdoor Lighting