LSMT Crescent Series ECO

Surface Mount Disc Downlight · Driverless · 0.63″ Ultra-Slim

The LSMT Crescent is the entry-tier ECO surface mount disc downlight at the thinnest profile in the multi-family ladder. Hits 103 lm/W at 0.79″ deep. Driverless AC-direct architecture, edge-lit PMMA optic, 5-CCTselect (2700–5000K), CRI ≥90. Five sizes (5″ / 7″ / 9″ / 11″ / 13″), Round + Square. Two finishes (W/B). JA8-2022 / Title 20 / Title 24 / ETL / Damp-listed. Built-in PIR sensor option for true plug-and-play occupancy out of the box.

Peak Efficacy: 67 lm/W (LSMT615 @ 3500K-4000K) Lumens: Up to 1,000 lm @ 3500K-4000K Profile: 0.63″ thinnest in class
Ideal Applications
In-Unit Living
Bath & Vanity
Corridor & Egress
5CCT
5-CCTSELECT
90+ CRI
90+ CRI · truCOLOR
AC-DIRECT
DRIVERLESS
PIR
BUILT-IN PIR (OPTION)
JA8 2022
JA8-2022
CALIFORNIA T.20 LISTED
CA Title 20
CALIFORNIA T.24 PART 6
Title 24 Part 6
ETL Listed
ETL Listed
RoHS Compliant
RoHS
DAMP
Damp Location

Model Specifications

Download Data Sheet
Beam Angle
100° wide-flood (±10%)
Finish
Architecture
Driverless AC-direct · 0.79″ profile
Weather Resistance
Damp Loc. vanity · powder · laundry · closet
Warranty
5 yr · 50k hr L70 lifetime
Watt Lumens lm/W CCT Voltage
Peak-efficacy CCT · 5-CCT dip-switch on the back of the housing — change CCT in the field without a SKU swap. LDLL1121 hits 103 lm/W at 4000K and 5000K — the family-leading efficacy in the surface-puck category. CRI ≥90 across the entire matrix; R9 inferred via JA8-2022 listing.

Dimensions

(For the selected size)
TOP VIEW · PUCK FACE Ø 5.51″ (140mm) overall trim diameter PIR port (7/9″ only) SIDE VIEW · SURFACE MOUNT J-BOX BRACKET (2.75″ / 3.5″) 1-Pin Ø 5.51″ (140mm) 0.79″ depth die-cast aluminum trim · PMMA edge-lit lens · driverless AC-direct Sizes: 5″ (5.51 OD · 0.79 D) · 7″ (7.48 · 0.82) · 9″ (8.86 · 0.79) · 11″ (10.98 · 0.98) · 13″ (12.80 · 0.98) · per Datasheet § Sizing & Measurements

Highlights & Features

The surface puck that hits 103 lm/W at 0.79″ deep.

Driverless AC-direct · 5-CCT · edge-lit PMMA · truCOLOR™ 90+ CRI · round/square + black/white · IP40 · CA compliance. 1-Pin Bi-Level Sensor in §5.

LDLL Eclipse-II — 11″ in black finish, the LDLL1121 family-leading 103 lm/W efficacy SKU at 4000K and 5000K (2,165 lm at 21W)
— Hero · Driverless · 103 lm/W

103 lm/W. Zero Driver. 0.79″ Deep.

AC-direct LED · no driver brick. Driverless eliminates the most-failed LED component — lower failure, no buzz, simpler service.

LDLL Eclipse-II 9″ — front face showing the edge-lit PMMA optic; the 5-CCT dip-switch lives on the back behind the mounting bracket
5-CCTselect™

One Switch. Five Color Temperatures.

2700K · 3000K · 3500K · 4000K · 5000K — field-set on a dip switch on the back of the housing. Stock one SKU per size, change CCT mid-build when the designer revises spec on a wing.

LDLL Eclipse-II 13″ — white finish, low-glare edge-lit PMMA optic delivering uniform 120° distribution from the perimeter, not a hot spot
Edge-Lit · PMMA Optic

Even Light. PMMA Lens. No Yellowing.

Edge-Lit Technology pushes light through the perimeter of the lens guide — uniform 120° output across the whole face, no hot center / dark edge. The lens itself is PMMA, not the polycarbonate competitors use; PMMA stays clear for decades while PC yellows in 3-5 years under continuous UV. Premium optic at PRO price.

LDLL Eclipse-II 7″ — white finish, smooth diffused light output with truⒶCOLOR™ 90+ CRI and <4 SDCM color stability across all 5 CCT settings
truCOLOR™

90+ CRI Default. < 4 SDCM.

Renders skin tones, fabrics, and finishes at the quality multi-family residents notice. CRI ≥ 90 across all 5 CCT settings, < 4 SDCM color stability bin-to-bin, R9 inferred via JA8-2022 listing. Cheaper brands ship 80 CRI / 7 SDCM — visible CCT inconsistency between fixtures on the same wing.

LDLL Eclipse-II — black finish round + square form factors available across the 7/9/11″ models, dramatic ceiling contrast option
Finish & Shape Ladder

Round or Square. White or Black.

Five round sizes (5″ / 7″ / 9″ / 11″ / 13″) in white and black, plus three square variants (7″ / 9″ / 11″, white only) for designer-driven specs. Most surface pucks are round-only, white-only. Eclipse-II covers the spec-grade matrix with one product line.

LDLL Eclipse-II 5″ — white finish IP40-rated for damp-location bath, powder, laundry, and NEC closet installs
WetGuard™ · IP40

Vanity, Powder, Laundry, Closet.

IP40 damp-location rated construction (per the Datasheet) covers the wet-zone applications most multi-family in-unit specs require: vanity baths, powder rooms, laundry closets, NEC-compliant closet installs (per closet clearance), and shower-non-direct-spray ceilings. Mounts to standard 2.75″ or 3.50″ J-boxes — universal retrofit.

LDLL Eclipse-II 11″ — California compliance stack visualization (JA8-2022 / Title 20 / Title 24 Part 6 / ETL / RoHS)
CA Compliance

JA8 · T.20 · T.24, Out of the Box.

JA8-2022 high-efficacy compliant (CRI ≥ 90, PF ≥ 0.9, 50,000-hr L70 lifetime). CA Title 20 listed (Appliance Efficiency database). CA Title 24 Part 6 ready. ETL · RoHS · Damp Location. The full California spec stack — required on every multi-family permit in the state.

ECLIPSE-II PUCK · 7″ / 9″ PIR PORT PIR · MOTION BI-LEVEL OUTPUT 100% ~20% MOTION enter exit · time-out LDLL-E2/MSP/W MSP-20CM CS · 20FT · BT MESH EM15-CL · constNTLink CHARGED NLC AUTO SELF-TEST · MONTHLY · LOGGED VIA CS APP EM15-CL 15W · 120Vac · ≥90 MIN · UL 924

Total Adaptive Control

The only puck on the market with a 1-Pin Bi-Level Sensor port.

Crescent ships ECO-tier · no built-in PIR. For motion or bi-level corridor compliance, spec the eCrescent /P (built-in PIR · 10s/1min/10min hold) or step up to Eclipse-II (1-Pin Plug-n-Play port for LDLL-E2/MSP/W bi-level sensor · satisfies Title 24 §130.0(c)).

Eclipse-II's 7″ and 9″ models include a dedicated 1-pin port on the back housing. Snap in the LDLL-E2/MSP/W sensor module — PIR motion detection, bi-level operation (20% baseline → 100% on motion → time-out back to baseline). Title 24 §130.0(c) corridor compliance with no electrician, no separate switch leg, no line-voltage retrofit. The single-product solution to the most-cited California corridor code requirement.

See all controls & accessories →

Photometric Distribution

Wide-flood 120° beam from the edge-lit PMMA optic.

Edge-Lit Technology delivers an even 120° distribution — one beam shape, twenty-five lumen cells (five sizes × five CCTs). Pick the size and CCT below; peak candela, total lumens, and the IES filename update with the selection. Note: the polar plots below are synthesized from the Datasheet lumen matrix using a 120° wide-flood cosine model. The 25 real IES files are on disk and will replace these once the WorkDrive bundle URL is registered.

Size · Wattage
CCT (5-CCTselect)
LDLL Eclipse-II LDLL0918 photometric distribution — 9″ · 18W · 4000K · 120° wide-flood, peak ~465 cd, total 1,460 lm
Peak Candela (estimated)
465 cd
Total Lumens
1,460 lm
Beam · Optic
120° wide-flood Edge-Lit PMMA CRI ≥ 90
Single 120° wide-flood beam across all 5 Eclipse-II sizes — no optic variants. Edge-Lit Technology delivers light from the perimeter of the PMMA lens guide for uniform, glare-free illumination across the whole face.
Test Lab Source
IESNA LM-79 / LM-80
LDLL0918-E2-4000K.IES
Download Full IES Bundle (25 files · LDLL family shared)
Compatible Accessories

The Crescent ecosystem.

Crescent native: LSMT4-KIT / LSMT6-KIT recessed conversion kit · /P SKU adds built-in PIR. constNT EMB + contrLS by CS ladders pair via Eclipse-II / Lunar Eclipse. Same ETL / JA8 / Damp pedigree.

Build Your Model

Configure Your Crescent

Selections build the LSMT Crescent SKU live. ★ default · QS QuickShip · 5-CCT on dip (not SKU)

0 of 3 required selected
Required
3 fields · all must be set
Aperture & Wattage *
Finish *
Shape *
Square available on 7″ / 9″ / 11″ · White only · per Active_SKUs roster
Optional · Companion Pairings
Separate line items · pick any combination
Companion · constNT Emergency Backup (pick one — separate SKU)
Companion · contrLS by CS (pick one — separate SKU)
Companion · 1-Pin Bi-Level Sensor (7″ / 9″ only — separate SKU)
Companion · Emergency Battery J-Box (any size — separate SKU)
Factory-default ship configuration / family-leading efficacy
QS QuickShip — in-stock, 1-3 day lead. Hundreds of thousands available.
MTO Made-to-Order — contrLS by CS sensors are MTO; all Eclipse-II fixtures and constNT EMBs ship QuickShip.
+ Companion accessory — separate line item, not part of the fixture order code.
Live Preview Crescent preview — 9″ white finish, surface-mount puck downlight, front 3/4 angle
Resolved SKU
LSMT[4|6][10|15]-S5[P]
— deriving ship tier —
Wattage
Lumens (4000K)
Efficacy
CCT (selectable)
2700 / 3000 / 3500 / 4000 / 5000K
CRI
≥90 (truCOLOR)
Beam Angle
120° wide-flood · edge-lit
Trim · Finish
Compliance
JA8 · cETLus · Damp · T24 · RoHS
Configuration incomplete. Resolve all 3 required fields (Aperture · Finish · Shape) to unlock pricing & submittal generation.
Documentation

Documentation & Resources

Everything specifiers, contractors, and project managers need to spec, install, and certify the Crescent — from the data sheet on day one to the IES files on the bid sheet to the warranty statement at closeout.

multi-fMILY Members

The full multi-fMILY collection.

Crescent is one luminaire in a thirteen-product collection engineered specifically for multi-family residential — in-unit living, corridors, baths & wet locations, and common amenity zones. Same factory, same CS controls platform, same JA8 / Title-24 / Damp-Location pedigree across every tier. If Crescent isn't the right fit for a given zone, one of these is.

PRO · SURFACE PUCK You Are Here LDLL Eclipse-II — 5/7/9/11/13″ surface-mount puck downlight, white finish
LDLL · Eclipse-II PRO
Eclipse-II
Entry-tier surface mount disc downlight in 2 sizes × White only, Round/Square. thinnest-in-class 0.63″ profile, ENERGY STAR, Built-in PIR option. The product on this page.
10-24W · 712-2,455 lm · 5-CCT · IP40
Currently viewing
PRO · SURFACE PUCK · BLACK LDLL Lunar Eclipse — sister product, black-only surface-mount puck
LDLL · Lunar Eclipse PRO
Lunar Eclipse
Black-only sister to Eclipse-II. Same 5-size ladder (5/7/9/11/13″), same edge-lit + driverless architecture, same 5-CCTselect dip-switch — but a different aesthetic family for spec packages that lead with black-on-ceiling.
10-24W · Black only · 5-CCT · same install
View product →
ECO · SLIM SURFACE LSMT Crescent — slim ECO-tier surface-mount LED downlight
LSMT · Crescent ECO
Crescent
Entry-tier slim surface-mount alternative when the project prioritizes first cost over the Eclipse-II PRO performance ladder. Same J-box install topology, lower efficacy, smaller size range — the budget option for spec coverage.
9-15W · 4″ / 6″ / 8″ · 5-CCT · ECO efficacy
View product →
ECO · GIMBAL RETROFIT LDGR Orbit-I — 4″ / 6″ E26 retrofit gimbal downlight, white finish
LDGR · Orbit-I ECO
Orbit-I
E26 retrofit gimbal downlight for the recessed-can install topology — 60° tilt + 360° rotation. Pick Orbit when the existing ceiling has a recessed cavity and the spec calls for accent / wall-wash / directional aiming.
10W / 15W · 720-1,193 lm · 60° gimbal
View product →
ECO · FIXED-BEAM RETROFIT LDRR Nebula-II — 4″ / 6″ fixed-beam retrofit downlight, white finish
LDRR · Nebula-II ECO
Nebula-II
Fixed-beam recessed retrofit downlight — same 4″/6″ E26 install path as Orbit, baffled or smooth trim option (W/B/BZ). The general-illumination cousin for in-unit installs that have an existing recessed can.
10W / 15W · 856-1,150 lm · 100° wide-flood
View product →
PRO+ · FLAGSHIP DOWNLIGHT LDRS Radius — flagship multi-family downlight, white finish
LDRS · Radius PRO+
Radius
Move-up flagship downlight when the corridor / common-area spec calls for higher CRI (≥95), tighter SDCM (<2 step), 0-10V dimming, and Chicago Plenum / UL 924 emergency listing. Eclipse-II's PRO+ companion when the building requires it.
15W / 25W · up to 2,200 lm · CRI ≥95 · UL 924
View product →
Multi-Family Support

Built for turn-over speed.

Hundreds of thousands ship from five US warehouses — 2-3 day QS lead means a unit refurb between tenants doesn't wait on lighting. Layouts back in 48 hours, quotes and rebate matches reply same business day. 24-pack contractor cartons standard.

2-3 day
QS Lead Time
48 hr
Layout SLA
Same-Day
Quote Reply
JA8 + Title-24 Rebates

Stack the California rebates.

Crescent is JA8-2022 listed and Title-24 Part 6 compliant — the hooks that unlock CalEnergyWise, PG&E / SCE / SDG&E utility rebates, and HUD multi-family programs. Typical offset on a property-wide retrofit: 20-50% of fixture cost. We'll match your APN and pull the paperwork.

JA8
CEC Title-24 listed
20-50%
Project Offset
CalEW + IOUs
Active Programs
Need a quote, layout, sample, or rebate match? We respond same business day.