D85 series Surface Mounted LED Downlight 15-20w

What is the D85 series Surface Mounted LED Downlight and where is it specified?

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we design luminaires that combine aesthetic minimalism with uncompromising performance for the international specification market. The D85 series Surface Mounted LED Downlight is a prime example of this philosophy. This elegant cylindrical fixture, with a diameter of 85mm and a height of 130mm, is engineered for applications where recessed installation is impractical or undesirable, such as concrete slabs, historic ceilings, or spaces with limited plenum depth. Constructed from high-grade ADC12 die-cast aluminium for superior thermal management and durability, the D85 series provides a versatile lighting tool for architects, lighting designers, and contractors working on high-end retail, hospitality, commercial, and residential projects. Available in 15W (XH-RB-15W-SM) and 20W (XH-RB-20W-SM) versions, it delivers powerful, high-quality light from a discreet and modern form factor.

Photometric and electrical specification

The D85 series is configurable with a wide array of best-in-class components to meet precise project requirements across the EU, US, and Middle East. Full IES and LDT photometric files are available for all variants, enabling precise lighting calculations in software like DIALux.

Parameter	Specification	Standard	Notes
Optics (CCT)	2700K, 3000K, 3500K, 4000K, 5000K, 6500K	ANSI C78.377	Tunable White (2700K-6500K) & Dim-to-Warm (3000K-1800K) options available.
Optics (Colour)	CRI >90, >95, >98; SDCM <3	IES TM-30-20	High-fidelity options with Rf >95 and Rg >98 for museum and luxury retail applications.
Optics (Beam)	15°, 24°, 38°, 60° via reflector + lens system	-	A low glare black reflector option achieves UGR<19, compliant with EN 12464-1 for VDU workstations.
Electrical	15W (~1650lm) / 20W (~2200lm); 100-110 lm/W	ErP Directive	System efficacy dependent on CCT, CRI, and driver selection. PF >0.9.
LED Chip	Bridgelux, Citizen, Cree, Philips, Luminus	LM-80	Premium chipsets ensure high lumen maintenance (L80/B10 @ 50,000+ hrs).
Driver	Tridonic, Mean Well, Osram, Philips, Lifud, BOKE	EN 61347	Fixed Output, DALI-2, 0-10V, Phase-cut (Triac), or wireless (Casambi, Zigbee).
Housing	ADC12 Die-cast Aluminium; D85 x H130mm	IP20	Standard finishes: Matt White (RAL9016), Matt Black (RAL9005). Custom RAL on request.
Certification	CE (LVD, EMC), RoHS, ErP	ISO9001:2015	Fully certified for sale and specification within European and other international markets.

Which spaces is it designed for?

The D85 series is engineered for specifiers and contractors in Europe and the United States who require a reliable, high-performance surface-mounted luminaire that does not compromise on design. Its versatility makes it a perfect fit for a multitude of architectural environments.

How can the D85 series create focused accent lighting in a retail boutique?

In a luxury retail environment, colour accuracy and visual impact are paramount. By specifying the D85 series with a high CRI98+ module and a narrow 15° or 24° beam angle, designers can create dramatic, high-contrast accent lighting on merchandise. The exceptional colour fidelity (Rf >95) ensures that fabrics, leathers, and brand colours are rendered exactly as intended. A series of these fixtures can be used to create compelling pools of light, guiding customers through the space and highlighting key products with over 1500 lux on display.

What makes this fixture suitable for hotel lobbies and circulation areas?

For hotel lobbies, corridors, and reception areas, the D85 combines a sophisticated aesthetic with robust performance. Its clean, cylindrical form factor complements modern and transitional interiors. Specifying a warm CCT of 2700K or 3000K creates a welcoming, high-end ambiance. The luminaire's compatibility with DALI-2 control systems allows for seamless integration into the hotel's building management system, enabling scheduled scenes, daylight harvesting, and energy savings. The durable ADC12 aluminium housing ensures longevity in high-traffic public areas.

Can it be used for task lighting in modern office or residential projects?

Yes, the D85 is an excellent solution for task lighting over desks, kitchen islands, or reading nooks where recessed fixtures are not an option. By selecting a neutral 4000K CCT and a glare-controlling black reflector, the fixture can achieve a Unified Glare Rating (UGR) of <19, meeting the stringent requirements for comfortable office lighting (EN 12464-1). With an output of up to 2200 lumens from the 20W version, it can easily provide the recommended 500 lux on the task plane, while dimming options like 0-10V or Casambi give the end-user full control over the light level.

Installation, control and compliance

Installation of the D85 series is straightforward. The luminaire mounts directly to a ceiling surface via a concealed base plate, which houses the terminal block for mains connection. This design ensures a clean finish with no visible fixings.

Control flexibility is a core strength. We offer drivers for virtually any control protocol required by a modern smart building project:

• Wired: DALI-2 DT6/DT8, 0-10V/1-10V analog dimming, and Phase-cut (TRIAC) dimming for residential retrofits.
• Wireless: Casambi (Bluetooth Low Energy) for app-based control and mesh networking, and Zigbee 3.0 for integration into larger smart home or building ecosystems.

Compliance is guaranteed for European and international projects. The D85 series is CE marked, conforming to the Low Voltage Directive (LVD) and Electromagnetic Compatibility (EMC) Directive. It is also fully RoHS compliant and designed to meet Ecodesign (ErP) efficiency standards. Our manufacturing facilities are ISO9001:2015 certified, ensuring consistent quality and process control.

Customisation, MOQ and lead time

We provide extensive customisation to ensure our products perfectly match your project's vision. Beyond the wide selection of CCTs, CRIs, and drivers, the D85 can be physically customized:

• Housing Finish: Standard finishes are a powder-coated Matt White (RAL9016) and Matt Black (RAL9005). We can accommodate any custom RAL colour request for project quantities.
• Reflector Finish: The internal optic reflector can be finished in specular Silver, Matt White, Matt Black, or a warm Gold to modify the light's appearance and aesthetic.

The minimum order quantity (MOQ) for the standard D85 configuration is 50 units. For custom RAL colours or other non-standard modifications, the MOQ is typically 100 units. Our standard production lead time is 15-20 working days from the confirmation of technical drawings to dispatch from our facility.

Frequently Asked Questions

Q: What is the standard warranty and what does it cover?

A: The D85 series comes with a comprehensive 5-year warranty. This covers the LED module and the driver against manufacturing defects and failure, ensuring lumen maintenance of at least L80B10 at 50,000 hours. The warranty is valid under specified operating conditions, including ambient temperature and voltage, providing long-term peace of mind for your project and client.

Q: Can I get this downlight in a custom RAL colour?

A: Yes, customisation is a core part of our service. While our standard finishes are Matt White (RAL9016) and Matt Black (RAL9005), we can produce the D85 series in any custom RAL colour to match your project's specific design palette. This service is subject to a minimum order quantity, typically 100 units, and may extend the standard lead time by 5-7 days.

Q: What is the difference between the 15W and 20W versions?

A: The primary difference is the light output and energy consumption. The 15W version (XH-RB-15W-SM) delivers approximately 1500-1650 lumens, suitable for general ambient lighting or ceiling heights up to 3 meters. The 20W version (XH-RB-20W-SM) increases the output to around 2000-2200 lumens, making it ideal for accent lighting, task areas, or spaces with higher ceilings where more punch is required.

Q: Are photometric files available for lighting design simulations?

A: Absolutely. We provide complete photometric data for every configuration of the D85 series. You can request full IES and LDT files, which are compatible with all major lighting design software, including DIALux, AGi32, and Relux. This allows your lighting designer to accurately model performance, calculate lux levels, and ensure compliance with project lighting standards like EN 12464-1 before specification.

Request IES files and a quotation

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, our engineering team is ready to support your project from specification to delivery. To receive a full datasheet, IES files for your lighting simulation, a competitive quotation, or to discuss customisation options for the D85 series, please contact us today. We are committed to providing high-performance lighting solutions for our partners in the EU, USA, and the Middle East.