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The SL-CL1F IP65 glass diffuser recessed COB downlight is a fixed round ceiling family for indoor projects that require a documented IP-rated front assembly, three cutout sizes and controlled spot optics. The 2026 indoor catalogue lists 12W, 18W and 25W models with D55, D75 and D95mm openings. A white visible trim, cylindrical finned aluminium body, spring retention and glass diffuser define the product's construction.
Key Difference: this LED Downlight page focuses on IP65 documentation, driver approval and wet-area specification boundaries. For a dimension-first comparison of the same SL-CL1F family, use the Round Downlight version. Choose an adjustable anti-glare recessed downlight when aiming, rather than a fixed optical axis, is required.
| Power | Ceiling cutout | Overall size | Light source |
|---|---|---|---|
| 12W | D55mm | D64 x H59mm | COB |
| 18W | D75mm | D86 x H78mm | COB |
| 25W | D95mm | D106 x H92mm | COB |
Power, aperture and body dimensions must stay on the same row. The existing H1 shows only 12W and the CMS omits the full body-height mapping, which can cause incorrect ceiling openings or insufficient void clearance. Approve the mechanical drawing before the contractor cuts the ceiling.
The latest catalogue and target gallery both mark SL-CL1F IP65. This rating is the strongest differentiator from common IP20 recessed fixtures, but an icon alone does not establish the exact tested boundary. Confirm whether IP65 applies to the exposed front, the complete luminaire, the remote driver and every cable entry.
IP65 does not mean submersible, steam-room certified or automatically suitable for every shower zone. Local wiring rules, ceiling construction, installation zone and the exact test report still govern use. Review the IP-rating verification guide and the IP65 downlight specification guide before approving a wet-area schedule.
The 2026 catalogue identifies an aluminium body with a glass diffuser. Product photos show a fixed circular aperture rather than a tilting gimbal. The diffuser protects the optical chamber and forms part of the visible front assembly, but the available material does not prove a silicone gasket, sealed driver or airtight ceiling classification.
Those unsupported construction claims have been removed from this page. If a project requires a sealed remote driver, specific gasket material, anti-condensation design or air-leakage performance, request the exploded drawing, BOM and relevant test report.
The catalogue lists 15, 24 and 36 degree fixed beams. The target gallery shows 15, 24 and 38 degrees, while the CMS adds a 20-degree value. This page follows the latest catalogue's 15/24/36-degree set and treats 20 and 38 degrees as stale or alternate optical data that requires an SKU-level check.
Use 15 degrees for concentrated accents, 24 degrees for display and table lighting, and 36 degrees for broader local coverage. Request an IES or LDT file for the exact power and optic because the beam label alone does not establish luminaire output, center-beam intensity or spacing.
The latest catalogue specifies CRI90 and lists 2700K, 3000K, 4000K, 5000K and 6000K. The target gallery's simplified table omits 5000K, while the CMS also carries 3500K and 4100K. This page follows the catalogue family; the quotation should identify the exact CCT and production bin.
CRI90 supports hospitality finishes, food presentation, retail materials and residential surfaces where color fidelity matters. Keep all fixtures in one project within a controlled batch and state the accepted chromaticity or SDCM limit when color consistency is critical.
The catalogue separates LED-chip efficacy of 100-120 lm/W from whole-luminaire efficacy of 70 lm/W. The CMS field states 80 lm/W and older copy converts this into estimated lumen figures. Chip efficacy cannot be multiplied by rated wattage and published as fixture output because optics, glass, thermal conditions and driver losses reduce delivered light.
Use the 70 lm/W catalogue value only as the current family reference. For project schedules, request tested luminaire watts, lumens and efficacy for the selected power, beam, CCT, CRI and driver. Do not publish the previous 960-2,000 lm range without a photometric report.
The latest catalogue lists AC100-265V, AC220-240V and DC24V platforms. The target gallery simplifies this to AC220-240V or AC85-265V, and the CMS adds AC220V plus or minus 10 percent. These are alternative electrical versions, not one universal driver.
The quotation and label must identify the exact driver code, input range, output current, power factor and wiring arrangement. The old page's DC12/24/36V wording is not supported by the current catalogue and should not be carried into a buyer specification.
The catalogue marks on-off, DALI, 0/1-10V and Triac as available. Each protocol requires a dedicated driver and compatibility review. The presence of four check marks does not prove that one driver supports every control method or that the product is compatible with every dimmer.
For phase-cut control, confirm leading- or trailing-edge compatibility and minimum load. For analogue systems, confirm 0-10V or 1-10V. For digital projects, confirm DALI or DALI-2. ZigBee, Bluetooth, voice control and generic smart-home compatibility are not shown in the catalogue or gallery and have been removed.
The gallery shows a circular ceiling opening followed by spring-clip insertion. Before installation, coordinate cutout diameter, full body height, driver location, cable route, maintenance access and any insulation clearance. The fixed optic must be positioned correctly because the luminaire does not show an aiming mechanism.
Browse the broader Downlight family, LED Downlight range and Recessed Downlight range when comparing cutouts, optics and installation types.
Is SL-CL1F included in the latest 2026 catalogue?
Yes. It is listed in the indoor catalogue as a 12W, 18W and 25W IP65 COB family with glass diffusers.
Which cutout matches each power?
Use D55mm for 12W, D75mm for 18W and D95mm for 25W, subject to the approved mechanical drawing.
Is this downlight adjustable?
The current gallery shows a fixed round optical axis. Select a dedicated adjustable model when aiming is required.
Can it be installed in every shower or steam room?
No blanket approval is made. Confirm the exact IP65 test scope, local zones and installation rules before use.
Which beam angles are current?
The 2026 catalogue lists 15, 24 and 36 degrees. The older 20/24/38-degree CMS data requires correction.
Does every version support DALI, Triac and 0/1-10V?
These require separate driver versions. Confirm the exact protocol and driver code before ordering.
What should an inquiry include?
Provide power, cutout, beam, CCT, CRI, voltage, control method, IP documentation requirement, quantity and destination market.
Start from the SYNNO Lighting homepage and request the SL-CL1F mechanical drawing, photometric file, driver sheet, IP report and exact-model certificate set before project approval.
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