Round Waterproof D135 LED Downlight 15-20W Customization

What is the Round Waterproof D135 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 D135 series—a high-performance, specification-grade waterproof LED downlight. Engineered for durability and visual excellence, this luminaire features an IP65-rated front fascia, making it impervious to dust and low-pressure water jets. The robust ADC12 die-cast aluminium housing ensures superior thermal management and longevity. Designed around a 125mm cutout, the D135 is available in 15W (XH-DL-15W-WP-R) and 20W versions, delivering powerful, high-quality illumination for demanding applications. It is the ideal choice for European and US contractors and specifiers designing lighting for luxury bathrooms, spas, high-end kitchens, and covered outdoor architectural spaces where both performance and protection are paramount.

Photometric and electrical specification

The D135 series is fully customizable to meet precise project requirements. We provide detailed photometric files and technical support to ensure your specification is met perfectly. Below are the primary configurable parameters.

Parameter	Specification	Standard	Notes
Luminous Flux	1200lm (15W) - 2600lm (20W)	N/A	Varies by CCT, CRI, and driver selection.
Correlated Color Temperature (CCT)	2700K, 3000K, 3500K, 4000K, 5000K, 6500K	ANSI C78.377	MacAdam SDCM <3 for consistent color between fixtures.
Color Rendering Index (CRI)	>80 Ra, >90 Ra, >95 Ra, >98 Ra	CIE 13.3	High R9 (>90) options for superior red rendering.
TM-30 Fidelity/Gamut	Rf >90, Rg >98 (Typical for CRI 95+)	IES TM-30-20	Full spectral power distribution data available on request.
Unified Glare Rating (UGR)	UGR <19 Capable	EN 12464-1	Achieved with black anti-glare reflector and specific beam angles.
Beam Angles	15°, 24°, 38°, 60°	N/A	High-transmission PMMA lens with vacuum-plated reflector.
Power Consumption	15W / 20W	IEC 62717	System wattage including driver losses.
Luminous Efficacy	80-130 lm/W	N/A	Dependent on specific configuration.
Driver Brands	Tridonic, Mean Well, Osram, Philips, TCI, HEP	EN 61347	Remote, flicker-free drivers. Specify brand preference.
LED Chip Brands	Citizen, Bridgelux, Cree, Philips, Luminus, Samsung	N/A	High-flux density COB LEDs for performance and reliability.
Housing Material	ADC12 Die-cast Aluminium	N/A	Excellent heat dissipation for L80/B10 >50,000 hours.
Ingress Protection	IP65 (Front Face Only)	IEC 60529	Driver and connections must be in a dry location.
Finish	Matt White (RAL9016), Matt Black (RAL9005)	N/A	Custom RAL finishes available for MOQ >200 units.
Certifications	CE, RoHS, ErP	LVD, EMC, EcoDesign	ISO9001:2015 certified manufacturing facility.

Which spaces is it designed for?

The IP65 rating of the D135 opens up a wide range of applications where standard downlights would fail. It allows for a consistent lighting scheme to be carried from dry interior zones into damp and wet areas, maintaining aesthetic continuity throughout a project.

How can this luminaire be used in hotel and spa projects?

In hospitality environments, the D135 excels in guest bathrooms, particularly within shower enclosures or directly over bathtubs where it meets Zone 1 requirements. Its IP65 seal prevents ingress from steam and water spray. For spa and wellness centers, it's ideal for treatment rooms, changing areas, and poolside relaxation zones. Specifying a high CRI of 95+ with a warm CCT of 2700K or 3000K ensures flattering light on skin tones, enhancing the guest experience. A 24° beam can be used to create dramatic highlights on textured walls, while a 38° or 60° beam provides comfortable ambient illumination.

What are the considerations for specifying it in high-end residential applications?

For luxury homes and apartments, the D135 is the go-to solution for kitchens, master bathrooms, and covered outdoor areas like patios and balconies. The die-cast aluminum build and 5-year warranty assure clients of a long-lasting, maintenance-free installation. The option for Dim-to-Warm (DTW) technology, from 3000K to 1800K, allows homeowners to transition from bright functional light to a warm, intimate glow. With a UGR<19 optic, it provides visually comfortable lighting, making it suitable even for kitchens that merge into open-plan living spaces.

Can this downlight be specified for boutique retail or gallery spaces?

While its primary feature is waterproofing, the D135's exceptional optical quality makes it a versatile tool for retail and gallery lighting. It is perfect for spaces that require frequent cleaning with water, such as gourmet food shops, butchers, or cafes. The CRI 98+ option provides museum-grade color fidelity, ensuring that merchandise, from fashion to fresh produce, is displayed in its truest colors. Using the 15° narrow spot beam, designers can create high-contrast accent lighting on specific products, drawing customer attention and achieving punchy focal points with illuminance levels exceeding 3000 lux on target.

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

Installation is streamlined for professional contractors. The D135 requires a standard D125mm cutout and is secured by robust, pre-installed spring clips. The luminaire is powered by an external, remote driver, simplifying maintenance and thermal management. The low profile of the fixture is suitable for ceilings with restricted void space.

We offer a comprehensive range of control options to integrate with any building system:

• DALI-2: For addressable, intelligent control in commercial projects, enabling individual fixture dimming, scene-setting, and energy monitoring.
• 0-10V / 1-10V: A reliable and widely adopted analog dimming protocol for simple and effective light level control.
• TRIAC (Phase-cut): Ideal for residential applications, allowing for dimming via standard wall dimmers.
• Wireless: We support Casambi (Bluetooth Low Energy) and Zigbee for projects requiring flexible control without the need for new control wiring.

The D135 series is fully certified with CE (LVD/EMC), RoHS, and ErP for market access across the European Union. We provide all necessary compliance documentation for project submittals.

Customisation, MOQ and lead time

As a specialist manufacturer, we thrive on customization. Beyond the standard options, we offer project-specific modifications including custom RAL color finishes, specific CCT/CRI binning, and integration of client-specified drivers. Tunable White (2700K-6500K), Dim-to-Warm (DTW), and RGBW versions are available on a project basis.

• Minimum Order Quantity (MOQ): The standard MOQ is 100 units. For fully custom configurations, the MOQ may be higher.
• Lead Time: For standard orders under 500 units, our typical production lead time is 15-20 working days. For larger or highly customized projects, lead times are approximately 25-30 working days. We can arrange expedited air freight for urgent project deadlines.

Frequently Asked Questions

Q: What is the exact IP rating and where can it be installed?

A: The D135 has an IP65 rating on the front face when correctly installed into a ceiling. This makes it dust-tight and protected against low-pressure water jets. It is suitable for bathroom Zone 1 as defined by EU regulations, meaning it can be placed directly above a shower or bathtub, provided the ceiling height is greater than 2.25 meters. The remote driver must be located in a dry, accessible area outside of the wet zone.

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

A: We provide a comprehensive 5-year warranty on the complete luminaire, including the driver. Our standard premium offerings include Tridonic, Osram, and Mean Well. For budget-sensitive projects, we offer reliable options like BOKE and Lifud. All drivers are selected for a >50,000-hour rated lifespan and are compliant with relevant regional standards (CE for EU), with UL-listed options available for the US market. We can accommodate specific brand requests for orders exceeding 500 units.

Q: Can I get a sample before placing a large order?

A: Yes, we encourage specifiers to request samples for mock-ups and quality evaluation. Single unit samples of our standard 15W, 3000K, 38° configuration can typically be dispatched within 3-5 working days. For customized samples, the lead time is approximately 10-12 days. We offer a sample discount which can be credited against a future bulk order of 200 units or more. Please contact our sales team to arrange this.

Q: What photometric data do you provide for lighting design?

A: We provide comprehensive photometric data for all configurations. This includes IES (.ies) and EULUMDAT (.ldt) files for use in lighting design software like DIALux and AGi32. These files contain detailed information on luminous intensity distribution, allowing for accurate calculations of illuminance (lux), uniformity, and Unified Glare Rating (UGR). Our TM-30-20 reports, with Rf and Rg values, are also available upon request for color-critical applications.

Request IES files and a quotation

To move forward with your project, please contact our technical sales team for a formal quotation, complete photometric data including IES and LDT files, and professional support for your DIALux simulations. We can provide detailed datasheets and assist with selecting the perfect configuration for your application. At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, our engineering team is ready to support your specification with full documentation, rapid prototyping, and competitive project pricing.