OEM/ODM Wholesale Waterproof D158 Square LED Downlight 20-30W

What is the D158 Square LED Downlight and where is it specified?

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we present the OEM/ODM Wholesale Waterproof D158 Square LED Downlight. This architectural-grade luminaire is engineered for specifiers, contractors, and distributors in the EU, US, and Middle East markets who require a robust, high-performance lighting solution for challenging commercial environments. With selectable power outputs of 20W or 30W and a unified square cutout of 145x145mm, it offers consistent aesthetics across a project. The fixture is distinguished by its IP65 rating, making it fully dust-tight and resistant to water jets, rendering it ideal for bathrooms, spas, covered outdoor soffits, and other areas exposed to moisture. Its precision-engineered ADC12 die-cast aluminum housing ensures superior thermal management and durability for a 50,000-hour L80/B10 lifespan. We provide comprehensive project support, including complete IES and LDT photometric files for seamless integration into your DIALux or Relux lighting design simulations.

Photometric and electrical specification

The D158 series is built to meet the rigorous demands of modern commercial lighting specifications. As an OEM/ODM manufacturer, we offer extensive customisation of core components to align perfectly with your project's technical and budgetary requirements. The table below outlines the standard and optional specifications available for the 20W and 30W models.

Parameter	Specification	Standard	Notes
Optics - CCT	2700K, 3000K, 3500K, 4000K, 5000K, 6500K	ANSI C78.377	MacAdam SDCM <3 for superior color consistency.
Optics - Color Rendering	CRI>80, >90, >95, >98+	CIE 1995	TM-30 Rf >90, Rg >98 available for retail/gallery specs.
Optics - Glare Control	UGR<19 or UGR<22	EN 12464-1	Achieved with specific reflector/baffle combinations.
Optics - Beam Angle	15°, 24°, 38°, 60°	-	Precision lens and reflector system for defined distributions.
Electrical - Power	20W (XH-DL-20W-WP-S), 30W (XH-DL-30W-WP-S)	-	Power Factor >0.9 for high electrical efficiency.
Electrical - Efficacy	80-130 lm/W	-	Varies with CCT, CRI, and driver selection.
Electrical - Driver	Tridonic, Osram, Mean Well, Philips, TCI, BOKE, Lifud	DALI-2, 0-10V	External, flicker-free drivers. TRIAC, BLE options available.
LED Chip	Citizen, Bridgelux, CREE, Philips, Luminus	LM-80	50,000hr L80/B10 rated lifetime.
Housing - Material	ADC12 Die-cast Aluminum	-	Excellent thermal conductivity and corrosion resistance.
Housing - Protection	IP65	IEC 60529	Dust-tight and protected from low-pressure water jets.
Housing - Finish	Matt White (RAL9016), Matt Black (RAL9005)	-	Custom RAL colors available upon request (MOQ applies).
Certifications	CE, RoHS, ErP, ISO9001	-	Fully compliant for European, UK, and associated markets.

Which spaces is it designed for?

The versatility of the D158 Square LED Downlight makes it a premier choice for a wide array of commercial applications where performance, durability, and moisture resistance are paramount. Its clean, geometric form factor complements contemporary architectural designs.

How can this downlight be used for hotel and hospitality lighting?

For hotel and hospitality projects, the D158's IP65 rating is a key advantage. It can be safely and confidently specified in guest room bathrooms (including Zones 1 and 2), spa and wellness centers, changing rooms, and covered exterior walkways or balconies. The availability of warm CCTs (2700K, 3000K) and Dim-to-Warm (DTW) functionality allows for the creation of a relaxing, luxurious ambiance. High CRI options (>90) ensure that expensive materials like marble, wood, and textiles are rendered beautifully, enhancing the guest experience.

What makes it suitable for high-end retail and showroom applications?

In high-end retail, color is currency. The D158 series excels with its capacity for exceptional color rendering, offering CRI >95 and even >98 options. This ensures that the true colors of fashion, cosmetics, and automotive finishes are displayed accurately. With TM-30 Rf (fidelity) values over 90 and Rg (gamut) values near 100, colors appear both natural and vibrant. The choice of beam angles—from a narrow 15° for dramatic accenting of merchandise to a wider 38° or 60° for ambient illumination—gives lighting designers the flexibility to create dynamic and engaging retail environments.

Is the D158 a good choice for modern office or educational spaces?

Yes, particularly in ancillary areas. While its primary strength is not standard office grid ceilings, it is an excellent solution for breakout spaces, corridors, canteens, and reception areas. With an appropriate deep-set reflector, it can achieve a UGR<19 rating, meeting the glare requirements for VDT workstations under the European EN 12464-1 standard. The flicker-free output from high-quality drivers like Tridonic or Osram ensures visual comfort, reducing eye strain for employees and students throughout the day.

Installation, control and compliance (DALI-2 / Casambi / 0-10V, CE / RoHS / ErP)

The D158 is designed for straightforward recessed installation into plasterboard or similar ceilings, requiring a square cutout of 145 x 145 mm. It is supplied with an external driver, which simplifies maintenance and thermal management. We offer comprehensive support for modern lighting control systems, essential for energy efficiency and smart building integration. Standard specifications include:

• DALI-2: For addressable, digital control common in European commercial projects.
• 0-10V/1-10V: A robust and widely used analogue dimming protocol.
• TRIAC: Phase-cut dimming for simpler, retrofit-friendly applications.
• Wireless: We can integrate drivers compatible with Casambi (BLE) or Zigbee for flexible control without new wiring.

The luminaire is fully certified with CE and RoHS, confirming its safety and compliance for sale within the European Economic Area. It also meets ErP directives for energy efficiency, ensuring your project adheres to current environmental standards.

Customisation, MOQ and lead time

As a dedicated OEM/ODM lighting manufacturer, our strength lies in customisation. We work directly with your team to tailor the D158 series to your exact needs.

• Component Selection: Choose your preferred LED chip brand, driver manufacturer, and specific CCT/CRI combination.
• Finishes: Beyond our standard Matt White and Matt Black, we can provide custom powder coating to any RAL color to match brand guidelines or interior design palettes.
• Minimum Order Quantity (MOQ): Our typical MOQ for customised projects is between 50 and 100 units, depending on the complexity of the request.
• Lead Time: We pride ourselves on efficient production. Standard sample orders are typically fulfilled in 7-10 working days. Bulk production orders for quantities up to 500 units generally have a lead time of 20-30 working days from the confirmation of technical specifications.

Frequently Asked Questions

Q: What is the warranty period and what driver brands are available?

A: The D158 series comes with a comprehensive 5-year warranty covering the entire luminaire. We offer a wide range of top-tier, flicker-free driver brands to meet your project's reliability and control requirements, including Tridonic, Osram, Mean Well, Philips, and TCI. This ensures long-term performance and peace of mind.

Q: Can this fixture achieve high color fidelity for museum or gallery use?

A: Absolutely. While designed for broad commercial use, it can be specified for color-critical applications. By selecting a CRI>98 LED chip, we can deliver fixtures with TM-30 Rf (fidelity) values exceeding 90 and Rg (gamut) values around 100. This level of color rendering makes it suitable for illuminating artwork and historical artifacts where color accuracy is paramount.

Q: What does the IP65 rating mean for installation locations?

A: An IP65 rating provides a high level of protection. The '6' indicates it is completely dust-tight, and the '5' means it is protected against low-pressure water jets from any direction. This makes it ideal for bathrooms (including Zone 1 over a shower with 3m ceiling), spas, kitchens, food preparation areas, and sheltered outdoor locations like soffits and canopies.

Q: What is the typical lead time for a project order of 200 units?

A: For a mid-sized project order of 200 units with standard customisations (e.g., specific CCT, driver brand), our typical production lead time is between 20 and 25 working days. This timeframe begins after all technical drawings are approved and the deposit is received. We always confirm the exact schedule upon order confirmation.

Request IES files and a quotation

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we are committed to providing our partners with the tools and products they need to succeed. To properly evaluate the D158 Square LED Downlight for your next project, please contact our engineering team to request the full photometric package. We provide complete IES and LDT files for all CCT and beam angle variants, ready for direct import into your DIALux lighting design software. Reach out today for a detailed quotation, customisation consultation, or to order samples for your mock-up.