Product Overview
The aeterna® Waterproof Recessed LED Downlight series is engineered for demanding indoor and semi-exposed environments where moisture, dust, and humidity are concerns. Featuring a robust aluminum die-cast heat sink with radial fin design for superior thermal management, a frosted glass diffuser for uniform light distribution, and an external waterproof aluminum power supply for reliable long-term operation. Available in multiple wattages (9W to 40W) and cutout sizes (130mm to 250mm), with both IP54 and IP65 protection options. Dimmable models feature 0-10V dimming control. The series delivers up to 150 Lm/W efficacy while maintaining waterproof protection against splashes and dust ingress.
Key Features & Benefits
IP54 Waterproof Protection
Protected against dust ingress and water splashes from all directions. Suitable for bathrooms, kitchens, covered outdoor areas, and industrial environments.
Aluminum Die-Cast Heat Sink
Radial fin design provides maximum surface area for heat dissipation, ensuring LED longevity of ≥50,000 hours and consistent light output over time.
External Waterproof Power Supply
Full aluminum shell waterproof driver separated from the luminaire for better thermal performance and easier maintenance access.
High Efficacy 100 Lm/W
Delivers up to 4000 lumens at 40W with flicker-free operation, reducing eye strain and meeting IEC/EN62471 photobiological safety standards.
Frosted Glass Diffuser
Over 90% light transmittance with uniform diffusion, eliminating glare and hotspots for comfortable illumination in any space.
Multiple CCT Options
Available in 3000K, 4000K, 5000K, 6000K, and 6500K to suit warm, neutral, or cool white lighting requirements for any application.
Technical Specifications
LDL75E Series — IP54 | Cutout 190/210/230mm | Size Ø230×72mm
| Parameter | GT-LDL75E-20-I5 | GT-LDL75E-30-I5 | GT-LDL75E-40-I5 |
|---|---|---|---|
| Input Power | 20W | 30W | 40W |
| Luminous Flux | 2000 Lm | 3000 Lm | 4000 Lm |
| Light Efficacy | 100 Lm/W | ||
| Working Voltage | 220~240V AC | ||
| Dimming | No | ||
| Warranty | 1 Year | ||
LDL60D Series — IP54 Dimmable | Cutout 170mm | Size Ø190×59.5mm
| Parameter | GT-LDL60D-10-I5 | GT-LDL60D-11-I5 | GT-LDL60D-12-I5 |
|---|---|---|---|
| Input Power | 10W | 11W | 12W |
| Luminous Flux | 1000 Lm | 1100 Lm | 1200 Lm |
| Light Efficacy | 100 Lm/W | ||
| Working Voltage | 220~240V AC | ||
| Dimming | Yes — 0-10V Dimming | ||
| Warranty | 3 Years | ||
LDL55D Series — IP54 Dimmable | Cutout 140mm | Size Ø159×59.5mm
| Parameter | GT-LDL55D-12-I5 | GT-LDL55D-13-I5 | GT-LDL55D-14-I5 |
|---|---|---|---|
| Input Power | 12W | 13W | 14W |
| Luminous Flux | 1200 Lm | 1300 Lm | 1400 Lm |
| Light Efficacy | 100 Lm/W | ||
| Working Voltage | 220~240V AC | ||
| Dimming | Yes — 0-10V Dimming | ||
| Warranty | 3 Years | ||
LDL50D Series — IP54 Dimmable | Cutout 130mm | Size Ø145×61.5mm
| Parameter | GT-LDL50D-09-I5 | GT-LDL50D-10-I5 | GT-LDL50D-11-I5 |
|---|---|---|---|
| Input Power | 9W | 10W | 11W |
| Luminous Flux | 900 Lm | 1000 Lm | 1100 Lm |
| Light Efficacy | 100 Lm/W | ||
| Working Voltage | 220~240V AC | ||
| Dimming | Yes — 0-10V Dimming | ||
| Warranty | 3 Years | ||
LDL105E Series — IP65 | Cutout 215-250mm | Size Ø270×54mm
| Parameter | GT-LDL105E-15-I6 |
|---|---|
| Input Power | 15W |
| Luminous Flux | 2250 Lm |
| Light Efficacy | 150 Lm/W |
| Working Voltage | DC36V |
| Power Supply | Metal Waterproof Power Supply Box |
| IP Rating | IP65 |
| Dimming | No |
| Warranty | 1 Year |
Common Specifications (All Models)
| LED Source | SMD 2835 |
| Color Temperature (CCT) | 3000K / 4000K / 5000K / 6000K / 6500K |
| CRI (Color Rendering Index) | >80 |
| Power Factor | >0.9 |
| Lamp Body Material | Aluminum Die-Cast + Glass |
| Working Environment | -20°C ~ +50°C, 10%~90% RH |
| LED Lifespan | ≥50,000 Hours |
| Installation | Recessed (Spring Clip Mounting) |
| Power Supply | External Aluminum Shell Waterproof Driver |
Applications
Compliance & Certifications
General (Luminaire)
EN 55015, EN 61000-3-2, EN 61000-3-3, EN 61547, IEC 60598-1, IEC 60598-2-1, IEC 60598-2-2
Driver (Electronic)
EN 55015, EN 61000-3-2, EN 61000-3-3, EN 61347-1, EN 61347-2-13, EN 61547, EN 61000-4-2/3/4/5/6/8/11
LED Module
IEC 62471 (Photobiological Safety), IEC 62031
Project Reference
aeterna® IP54 Waterproof LED Downlights have been installed in numerous government and commercial buildings across Hong Kong, demonstrating proven reliability in demanding environments.
| Property | Address | Fixture |
|---|---|---|
| 九龍塘教育服務中心 Kowloon Tong Education Services Centre |
九龍塘沙福道19號 19 Suffolk Road, Kowloon Tong |
20W LED Downlight (IP54) |
| 工業貿易大樓 Trade and Industry Tower |
啟德協調道3號 3 Concorde Road, Kai Tak |
30W LED Downlight (IP54) |
| 機電工程署總部大樓 EMSD Headquarters Building |
九龍灣啟成街3號 3 Kai Shing Street, Kowloon Bay |
11W LED Dimmable Downlight (IP54) |
| 順利紀律部隊宿舍利安商場 Shun Lee DQ – Lee On Shopping Centre |
觀塘利安道32號 32 Lee On Road, Kwun Tong |
20W LED Downlight (IP54) |
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