This listing is the 4000K natural white 5 m roll — reference HL-COB-24V-40K-R90-24W-IP00. Same dual-line high-power COB family as our 3000K and 6000K versions: 24 V, 24 W/m, only 12 mm wide, CRI 90. Same strip, neutral, task-friendly light.
High-power COB in a 12 mm body — built for retrofit
Most 24 W/m tapes are 15–20 mm+ wide and will not sit inside older battens, trunking or compact fittings. This one stays 12 mm with two COB lines side by side, so you get high brightness in the same slot as a standard single-row tape. We use it to re-lamp old fluorescent battens, shallow profiles and commercial fittings. Results on site have been very good: even light, no LED dots, and enough output to replace tired tubes without widening the housing.
Key facts
- Dual-line COB — two phosphor lines, ~2000 lm/m, 600 LEDs/m class, seamless line of light
- 12 mm PCB — high-power COB for retrofit into older fittings and slim profiles
- 4000K natural white, CRI ≥ 90
- 24 V DC constant voltage, 24 W per metre (5 m roll ≈ 120 W / 5 A)
- Cut every 20 mm on the marked 24 V pads
- IP00 / indoor — mount on aluminium (profile or flat bar) for cooling
- Fully dimmable with any constant-voltage PWM LED controller (not a mains trailing-edge dimmer on the 24 V side)
Dimming
Use a 24 V constant-voltage PWM dimmer / single-colour controller. Open the Related Products tab for matching Hi-Line controllers (V1-L, V1-F, V1-T, WT1 WiFi, R6 remotes). Pair the controller with a non-dimmable 24 V driver; the controller does the PWM. Size the driver at ~150 W for a full 5 m roll at full brightness.
Also in this family (Related Products): 3000K warm white HL-COB-24V-30K-R90-24W-IP00 and 6000K cool white HL-COB-24V-60K-R90-24W-IP00.
Install notes
- Stick to a clean aluminium surface. 24 W/m needs heat sinking — do not leave it on wood or plastic.
- Cut only on the 20 mm marks. Observe +24 V polarity.
- For runs near 5 m, feed both ends if you see end-to-end drop-off.
- Indoor only (IP00).
Specifications
- Reference: HL-COB-24V-40K-R90-24W-IP00
- Length: 5 m roll
- Voltage: 24 V DC constant voltage
- CCT: 4000K natural white · CRI ≥ 90
- Power: 24 W/m · ~2000 lm/m · ~600 LEDs/m
- Width: 12 mm dual-line COB
- Cut: every 20 mm
- Dimming: constant-voltage PWM
- IP: IP00 indoor
- Certifications: CE, UKCA, RoHS
Looking for Related Products or Accessories?
Open the Related Products tab for PWM controllers, remotes, the 3000K / 6000K sibling rolls, and other high-power COB options.
