LPAR PRO

The PAR38 your Opticom intersection actually wants.

LPAR is the LED replacement for the small white floodlight on each approach to a pre-emption-equipped intersection — the EVP confirm beacon that illuminates steady-burn when an emergency vehicle has acquired traffic-signal pre-emption. Three SKUs cover the spec range: cool-white 4800K for the confirm-beacon visibility spec, MDOT-listed Black-Body 900lm for the strictest signal-lamp QPL in the US, and a 1500lm legacy flagship for general traffic-signal applications. CRI 93. 5-year warranty. Direct screw-in to existing E26 PAR38 sockets.

Wattage: 7W / 10W / 19W Lumens: 390 / 900 / 1,500 lm CRI: 93 (R9 65 · R13 94)

Ideal Applications

Bike Lane

Greenbelts

Highways

Walkways

3-SKU LINEUP

MDOT-LISTED

THERMALⒶRMOR

DIELECTRIC GREASE

CRI 93

LPAR LED Traffic PAR38 — 3/4 angle hero showing the lensed parabolic reflector and clear optic, E26 medium screw base visible at bottom

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Side-profile detail · cast aluminum housing + heat-sink fins (thermalⒶRMOR design)

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MDOT-listed Black-Body 900lm variant · LPAR38C90030K1 · the only PAR38 LED on the Michigan QPL

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Base-up view · E26 medium screw + dielectric grease · direct screw-in for legacy PAR38 sockets

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Traffic signal head with EVP confirm-beacon socket · LPAR illuminated steady-burn during pre-emption acquisition

cULus Listed

FCC Part 15

RoHS

Wet Location

How EVP Pre-Emption Works

LPAR's role in the EVP signal chain.

An emergency vehicle approaches a pre-emption-equipped intersection. Its emitter sends an infrared signal to a detector mounted on the signal head. The detector tells the controller to flip the lights to green for that approach. The controller fires the LPAR confirm beacon to steady-burn — visual proof to the emergency operator that pre-emption was acquired. Five stages. LPAR is stage 5.

Diagram derived from public-domain documentation of Opticom-style EVP systems and ALG datasheet language ("designed for direct installation into both existing and new EVP assemblies"). Static SVG — no video file or motion carousel claim. LPAR's specific role: stage 5 confirm beacon, the visual proof loop that closes the system.

Highlights & Features

The PAR38 the DOT specs. Not the one your maintenance crew picks up at the supply house.

Three SKUs cover every EVP intersection approach — sealed-cabinet thermalⒶRMOR build, FCC Part 15 compliance, and CRI 93 for accurate visibility against amber signals.

— Hero Highlight

MDOT-Listed Black-Body 900lm.

Michigan DOT publishes one of the strictest LED PAR38 traffic-lamp specs in the US — and most other states' DOTs follow MDOT's lead. The LPAR38C90030K1 Black-Body 900lm/10W variant is engineered specifically to meet it: -40°F to 165°F operating range, non-reflective housing for sealed-cabinet light containment, and CRI 93 visibility against amber traffic signals. Drop in this SKU and your project clears the QPL gate without an extension request.

3-SKU Lineup

3 Lamps. Every Traffic Application.

7W/390lm @ 4800K cool-white for the EVP confirm beacon visibility spec. 10W/900lm @ 3000K Black-Body for the MDOT QPL. 19W/1500lm @ 3000K for legacy general-traffic-signal applications. Three discrete spec points — not the 50-SKU sprawl of a commercial PAR38 line. Specifiers know what to bid; distributors know what to stock.

EVP Confirm Beacon

Purpose-Built. Not Re-Purposed.

The competing, competing, and generic-brand PAR38 LEDs your maintenance crew can buy at any supply house are general-purpose commercial lamps. They fail in 1-2 years inside a sealed signal cabinet. LPAR is engineered for the application: thermalⒶRMOR for cabinet heat, dielectric grease for the socket, FCC Part 15 for the RF-dense cabinet. Direct screw-in to existing E26 sockets — Opticom-compatible.

Macro of the LPAR cast aluminum housing showing the heat-sink fin geometry · thermal<span class="aa">Ⓐ</span>RMOR design label · cabinet thermometer in the background reading 165°F

Heat Engineered

thermalⒶRMOR Design.

Heat is the single biggest failure mode for PAR38 LEDs in traffic-signal cabinets. South-facing sealed cabinets hit 165°F in summer. thermalⒶRMOR design uses the cast aluminum housing as a sized heat sink, with fin geometry tuned for natural convection inside an enclosed cabinet. The MDOT 900lm SKU adds a wider operating range to -40°F (Michigan winter) and 165°F (summer cabinet).

Detail shot of dielectric grease applied to the LPAR E26 medium screw base · gloved hand mid-installation showing the protective gel coating the contact threads

Socket Protected

Dielectric Grease at the Base.

Outdoor PAR38 sockets sit at the same place for 15+ years and accumulate moisture, oxidation, and corrosion at the contact interface. Dielectric grease applied at the socket extends contact life across the full 25,000-hour rated lifespan and prevents the green-tinted corrosion that takes a confirm beacon offline silently between scheduled inspections.

High Color Quality

CRI 93 · R9 65 · R13 94.

Most traffic-signal lamps carry CRI 70-80. LPAR ships with CRI 93 and high R9 (reds) + R13 (skin tones) — the indices that matter for emergency-light visibility against amber/red signal heads, and for pedestrians and cyclists who need to see the confirm beacon clearly at dusk and dawn. Strict LED binning across all lamps keeps the CCT consistent.

Clean RF

FCC Part 15. Cabinet RF Compliant.

Traffic cabinets are full of RF: cellular modems, EVP detectors, signal controllers, Triac dimmers, surge protectors. General-purpose PAR38 LEDs cause RF interference that corrupts EVP detector signals — a confirm beacon that interferes with its own pre-emption detector is worse than no confirm beacon. LPAR is FCC Part 15 compliant and explicitly tested for electrically dense traffic-cabinet environments. Triac dimmable, non-flicker, PF >0.9.

Compatible Control Scenarios

Triac-dimmable. Non-flicker. FCC Part 15 quiet.

LPAR runs on a 120Vac line input with Triac dimming compatibility for control scenarios where the traffic-signal controller dims the confirm beacon at night for visibility adaptation. Performance is specified at PF > 0.9 with non-flicker operation — meaning the lamp doesn't strobe at line frequency when dimmed, which matters because EVP detectors look for strobed light. A flickering confirm beacon false-triggering its own detector is worse than no confirm beacon.

Plus, the lamp is FCC Part 15 compliant. Traffic cabinets are full of RF: cellular modems, EVP infrared detectors, signal controllers, dimming Triacs, surge protectors — all packed into the same enclosure. A general-purpose PAR38 LED can radiate enough EMI to corrupt EVP detector signals or interfere with cellular backhaul. LPAR's driver is explicitly designed for cabinet-RF cleanliness.

Compatible with any standard Triac (forward-phase) dimmer that meets the host signal-controller's specification. No proprietary controls platform, no firmware handshake, no commissioning. Just a 120Vac line with a Triac dimmer in series — the lamp dims smoothly with no perceptible flicker, no audible buzz, and no RF interference with the rest of the cabinet electronics. PF maintained at >0.9 across the dim range. Operating temperature -4°F to 120°F (MDOT 900lm Black-Body extends to -40°F to 165°F). Suitable for use in totally enclosed signal-cabinet fixtures.

View Datasheet for full electrical spec →

Engineering · Anatomy

Built for the cabinet. Spec'd for the QPL. Screwed into the same socket.

Seven engineering details that make LPAR the right PAR38 lamp for traffic-signal cabinets — a 25° narrow-flood Clear Optic for confirm-beacon visibility, CRI 93 with high R9 + R13 for accurate color rendering against amber signals, thermalⒶRMOR heat-sink geometry tuned for sealed enclosures, and dielectric grease at the E26 base to keep the contact interface alive across the full 25,000-hour rated lifespan.

Anatomy callouts derived from the datasheet's Main Features section. The 25° Clear Optic is what makes the LPAR a legitimate confirm-beacon spec match (commodity PAR38 LEDs typically ship 40°+). thermalⒶRMOR design is what keeps it alive past 25,000 hours inside a sealed south-facing signal cabinet that hits 165°F in summer. Dielectric grease is what keeps the E26 contact corrosion-free across that same 25,000-hour run.

Build Your Model

Configure Your LPAR

Every option below maps to the LPAR Traffic PAR38 order code. Selections build the SKU live — no checkout, no surprises. Required fields marked with *. Greyed-out options are not selectable with your current configuration. See the legend in the Optional column for ★ / QS / MTO meanings.

0 of 2 required selected

Required

2 fields · all must be set

Lumen Output / Wattage*—

CCT*—

Optional

0 add-ons · pick any combination

★Factory-default ship configuration

QuickShip · 3-5 day lead

Made-to-Order · 4-6 week lead

Estimates · not guarantees · subject to availability · confirm before committing.

Live Preview LPAR preview — full elevation showing the lensed parabolic reflector and E26 medium screw base

Resolved SKU

LPAR38C[LM][CCT]1

— deriving ship tier —

Max Lumens

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Efficacy

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CCT

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Voltage

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Optic · Beam

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Peak Intensity

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Finish

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Compliance

cULus · FCC Part 15 · RoHS · Wet Loc · MDOT-listed

Configuration incomplete. Resolve all 7 required fields to unlock pricing & submittal generation.

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Round Out the Project

For the complete venue.

LPAR handles the EVP confirm beacon. These cross-line fixtures handle everything else — same warranty platform, same factory. Specify them together for a coherent ALG package across the whole intersection.

CITYRCH

Post-Top · PRO+

Symmetry

Spec-grade post-top for civic plazas, walkways, and campus paths bordering the field. SimplySNAP-ready, BeamLogic optic system.

4,000-16,000 lm · IP66 · NEMA II/III/V

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LAMPARRCH

Linear High-Bay · PRO

Titan

For interior spaces in the traffic-control building or signal-cabinet maintenance shed. Same warranty platform, same factory.

12,000-30,000 lm · IP65 · 5-year warranty

Spec-grade panel for locker rooms, training centers, press boxes, and admin offices in the same building. CCT-select + step-dim ready.

4,000-7,200 lm · 2×2 / 2×4 / 1×4 · cULus Listed

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MULTI-FMILY

Downlight · Easy-Upgrade

Nebula-II

For concourse areas, restrooms, hallways, and ticket booths. Easy-upgrade housing, retrofit-friendly, same SimplySNAP mesh.

800-2,200 lm · 4" / 6" / 8" · IC-rated

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Specifier Support

Direct line to your regional rep.

Five US warehouses ship in 3-5 days. Layout requests come back inside 48 hours. Quotes, sample requests, and rebate matches reply same business day. No portal-as-the-only-channel: you get a person.

US Warehouses

48 hr

Layout SLA

Same-Day

Quote Reply

Find a Rep Contact Sales

Single-Source Procurement

One PO. Whole signalized intersection.

Spec the LPAR for the EVP confirm beacon, the Sentry for the pedestrian approach, the Abbey for the roadway cobra-head, and the OmniMax for the major-intersection high mast — all on the same PO, all from the same factory. One inventory line for the cityⒶRCH outdoor portfolio reduces procurement complexity by an order of magnitude across a multi-intersection contract.

4 lines

cityⒶRCH outdoor

1 PO

Whole intersection

Same Factory

Same Warranty

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Need a quote, layout, sample, or rebate match? We respond same business day.

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LPAR PRO

The PAR38 your Opticom intersection actually wants.

Model Specifications

Dimensions

LPAR's role in the EVP signal chain.