Adjustable D135 Series LED Spot Downlight Round 20-25W

What is the Adjustable D135 Series LED Spot Downlight and where is it specified?

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we present the D135 Series Adjustable LED Spot Downlight, a cornerstone of our specification-grade luminaire collection. This versatile 20W/25W fixture, identified by product codes XH-PL-20W-AR and XH-PL-25W-AR, is engineered for demanding commercial applications across the EU, US, and Middle East. Housed in a durable ADC12 die-cast aluminium body with a Ø135mm trim and requiring a Ø115mm cutout, it offers both robust performance and a clean aesthetic. The core feature is its adjustability—355° rotation and 30° tilt—allowing precise accenting. With a deep-set COB LED and advanced optics, it delivers exceptional visual comfort and is the go-to choice for architects, lighting designers, and contractors seeking a reliable, high-performance accent light for retail, hospitality, and corporate environments.

Photometric and electrical specification

The D135 Series is built to meet stringent European and American project standards. Full IES and LDT photometric files are available for seamless integration into DIALux lighting design software. The table below outlines the key performance metrics.

Parameter	Specification	Standard / Method	Notes
Power Consumption	20W / 25W	EN 62722-2-1	System wattage, including driver. Power factor >0.95.
Luminous Efficacy	100-130 lm/W	-	Varies with CCT and CRI selection. Highest efficacy at 4000K/5000K, CRI80.
Selectable CCT	2700K, 3000K, 3500K, 4000K, 5000K, 6500K	ANSI C78.377	MacAdam Ellipse <3 SDCM ensures binning consistency. Tunable White & Dim-to-Warm available.
Color Rendering	CRI >80, >90, >95, >98 Ra. R9 >50 for CRI90+	TM-30-18	High-fidelity CRI98+ option available with Rf ≈95, Rg ≈100 for museum-grade applications.
Unified Glare Rating (UGR)	<19	EN 12464-1	Achieved with specific reflector/lens combinations; ensures visual comfort in office and retail.
Beam Angle Options	15°, 24°, 36°, 60°	-	Interchangeable PMMA lens for precise beam control.
LED Chip Brand	Citizen / Bridgelux / CREE / Philips / Luminus	-	COB (Chip-on-Board) technology for a uniform, single-source light beam.
LED Driver Brand	Tridonic / Philips / Osram / Mean Well / TCI / BOKE	EN 61347	External constant current driver. Flicker-free options available.
Housing Material & Finish	ADC12 Die-cast Aluminium. Matt White (RAL9016), Matt Black (RAL9005)	-	Custom RAL finishes available upon request for a minimum order quantity (MOQ).
Ingress Protection	IP20	EN 60529	Suitable for dry indoor locations only.
Certifications	CE-LVD, CE-EMC, RoHS, ErP, ISO9001:2015	-	Fully compliant for export to the European Union market.

Which spaces is it designed for?

The D135 series is a precision tool for lighting specifiers. Its adaptability in power, optics, and color quality makes it suitable for a wide range of commercial interiors where the quality of light directly impacts experience and sales.

How can the D135 Series enhance high-end retail displays?

For high-end retail and boutique environments, the D135 excels at creating powerful focal points. Use the narrow 15° or 24° beam angles to punch light onto mannequins, handbags, or jewelry displays, achieving high illuminance levels of over 1000 lux. Specify our CRI95+ or CRI98+ versions to ensure that the color of fabrics, leathers, and precious metals is rendered with perfect accuracy, enhancing their perceived value. The fixture's 355° rotation and 30° tilt are critical for accommodating frequent merchandising changes without altering the ceiling layout.

What makes this fixture suitable for hotel lobby and guest room lighting?

In hospitality, atmosphere is paramount. The D135 answers this need with its wide range of CCTs and specialty options. A warm 2700K or 3000K CCT creates a welcoming, luxurious ambiance in lobbies and lounges. Our Dim-to-Warm (DTW) option, which shifts from 3000K to 1800K as it dims, mimics the warm glow of incandescent lighting, perfect for guest rooms and intimate restaurant settings. The deep-set light source and quality optics guarantee a low UGR (<19), preventing glare and ensuring visual comfort for guests.

Can it be used for accent lighting in museums or art galleries?

Yes, this is a primary application. When specifying for museums and galleries, color fidelity is non-negotiable. Our CRI98+ COB option with a high R9 value (>80) ensures that every hue and subtle gradation in a piece of art is revealed faithfully. The fixture's interchangeable optics allow curators to precisely shape the light to fit artwork of any size, from a tight 15° spot on a small sculpture to a broader 36° wash on a large canvas. Full IES and LDT photometric files can be supplied to designers for detailed modelling in DIALux to verify illuminance levels and uniformity before installation.

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

Engineered for seamless integration, the D135 spot downlight installs into a standard Ø115mm ceiling cutout and is secured by two robust spring clips. The external driver architecture simplifies maintenance and allows for unparalleled control flexibility. We offer drivers compatible with all major control systems used in Europe and the US:

• DALI-2: For addressable, intelligent lighting systems in large commercial projects, offering monitoring and granular control.
• Casambi (BLE): For wireless Bluetooth mesh control, ideal for retrofits and spaces where new control wiring is impractical.
• 0-10V/1-10V: A reliable and widely adopted analog dimming standard.
• TRIAC (Phase-cut): For cost-effective dimming in smaller-scale applications.

All configurations are CE certified (LVD/EMC), RoHS compliant, and meet ErP directive requirements, ensuring full market access for projects in the European Union. Our manufacturing facility is ISO9001:2015 certified, guaranteeing consistent quality and process control.

Customisation, MOQ and lead time

As a direct manufacturer, we offer extensive customisation. Beyond standard options, we can accommodate requests for specific CCTs, custom RAL powder coat finishes, and unique driver/control combinations to meet precise project demands.

The standard Minimum Order Quantity (MOQ) for the D135 series is 100 units. For standard configurations in Matt White or Matt Black finish, our production lead time is typically 15-20 working days. For custom orders involving non-standard finishes or components, please allow for a lead time of 25-30 working days. We encourage you to discuss your project timeline with our sales engineering team.

Frequently Asked Questions

Q: What is the typical lumen output for the 25W version?

A: The 25W D135 Spot Downlight (XH-PL-25W-AR) delivers a lumen output between 2500 and 3250 lumens, depending on the selected CCT and CRI. For instance, a standard 4000K, CRI80 version achieves the highest efficacy at around 130 lm/W. Choosing a high-fidelity CRI98+ option may result in an output closer to 2500 lumens. We provide specific photometric data for each configuration.

Q: Is the driver included with the luminaire or supplied separately?

A: The luminaire is designed for use with an external, constant current driver, which is typically supplied by us but packaged separately from the fixture head. This modular approach allows for maximum flexibility in selecting control protocols like DALI, 0-10V, or TRIAC. We offer premium driver brands including Tridonic, Osram, and Mean Well, all covered under the comprehensive 5-year warranty.

Q: What is the range of adjustment for the spotlight?

A: The D135 Series offers significant aiming flexibility for precise accent lighting. It features a 355° horizontal rotation and a 30° vertical tilt. This range allows specifiers to easily direct light onto walls, displays, or specific objects even after the fixture is installed in the ceiling, making it ideal for dynamic spaces like retail stores and galleries where layouts frequently change.

Q: Can you provide TM-30-18 data for museum specifications?

A: Absolutely. For museum and gallery applications, we recommend our high-CRI COB options (CRI95+ or CRI98+). For these configurations, we can provide full TM-30-18 reports upon request. Typically, our CRI98+ LED chips achieve a fidelity index (Rf) of 95 or higher and a gamut index (Rg) between 98 and 102, ensuring exceptional color accuracy.

Request IES files and a quotation

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, our team is ready to support your next project. We provide comprehensive technical documentation, including IES and LDT photometric files for DIALux simulations, detailed datasheets, and installation guides. Contact our technical sales department today for a project-specific quotation, to request samples, or to discuss your customisation requirements for the D135 Series LED Spot Downlight. We look forward to collaborating with you to deliver outstanding lighting solutions for your clients.