191 lm/W — The Highest Efficacy
Parking Lot Light in Its Class
OT02 Series: IES-verified 172–191 lm/W · DIP selectable wattage & CCT · Acuity/Lithonia-level optics · Zero uplight U0
191 lm/W
Peak Efficacy (IES)
+17%
vs OT Gen 1
4 SKUs
Cover 9 Wattages
U0
Zero Uplight All SKUs
The OT02 Series is the second generation of Auvolar's flagship OT area light, delivering a 15–20% efficacy improvement over OT Gen 1 through next-generation Seoul Semiconductor LEDs and precision optics. IES files measured on an EVERFINE GO-2000B goniophotometer confirm 172–191 lm/W across all nine wattage configurations — 30%+ above most market alternatives. A single OT02 SKU covers 2–3 power levels via DIP switch (48–300W across four tiers), and all three CCTs (3000K/4000K/5000K) are field-selectable without returning the fixture. The Type IV T401 optic delivers Acuity/Lithonia-class beam precision, and every wattage achieves 0.00 lm in the 90–180° zone (BUG U0), fully Dark Sky compliant.
Generation Comparison
OT02 Gen 2 vs OT Gen 1 — What Changed
Same proven platform, same installation footprint — but meaningfully better where it counts. OT02 is not a cosmetic refresh. The efficacy, flexibility, and optic quality are genuinely different.
| Feature | OT Gen 1 | OT02 Gen 2 | Delta |
|---|---|---|---|
| Peak Efficacy | 163 lm/W | 191 lm/W | +17% ✓ |
| Wattage Selection | Fixed per SKU | DIP switch (2–3 levels) | 1 SKU = multiple wattages ✓ |
| CCT Selection | Fixed per SKU | DIP 3000K/4000K/5000K | Field-adjustable ✓ |
| Max Lumens @300W | 47,055 lm | 51,636 lm | +10% ✓ |
| Optic Quality | Standard IES Type | Acuity/Lithonia level (T401) | Industry-top tier ✓ |
| IP Rating | IP66 | IP65 | OT Gen 1 slightly better |
| IK Rating | IK10 | IK09 | OT Gen 1 slightly better |
OT Gen 1 data from LM-79 reports (JAE200924 series). OT02 data from IES files, EVERFINE GO-2000B, 2026-04-07.
What We Hear
4 Parking Lot Lighting Problems OT02 Eliminates
“We ordered 200W, installed everything, then the owner said it was too bright. Had to return the fixtures and order 150W. Two weeks of delays, 25% restock fee, another installation trip.”
— Property Manager, 120-space retail center, Phoenix AZ✅ OT02 Fix: DIP switch down to the next wattage tier. 5 minutes on a ladder, $0 cost, zero returns.
“Client called two days before completion — they want 3000K warm white, not 5000K. We had 5000K in stock. Project delayed two weeks waiting for a reorder. Owner threatened to cancel.”
— Electrical Contractor, San Bernardino CA✅ OT02 Fix: DIP switch CCT to 3000K in the field. No reorder, no delay, same fixture.
“Our budget only covered 15 pole positions, but the lot needed 20 for adequate coverage with standard 150 lm/W fixtures. We had to either go over budget or under-light the lot.”
— Facilities Director, medical office complex, Sacramento CA✅ OT02 Fix: At 191 lm/W, each OT02 delivers 30%+ more lumens per watt than typical competitors. Same budget, same 15 poles — but enough lumens to cover the entire lot.
“We had three simultaneous parking lot projects — one needed 100W, one 150W, one 200W. Three separate POs, three different SKUs, three inventory bins. It's a logistical nightmare.”
— Procurement Manager, regional electrical distributor✅ OT02 Fix: The 200W tier covers 165/200W, and the 140W tier covers 100/140W. Two SKUs replace four. One PO, one inventory bin, zero confusion.
IES Verified Performance
Full IES Data — All 9 Wattage Configurations
Every number below comes from actual IES files, not marketing estimates. Tested on an EVERFINE GO-2000B goniophotometer. Each wattage is a real IES file with full photometric data including 0.00 lm in the 90–180° zone.
| Wattage | Lumens | Efficacy | DIP Tier | Uplight |
|---|---|---|---|---|
| 48W | 9,222 lm | 191 lm/W ★ Peak | 80W Tier | U0 |
| 65W | 12,413 lm | 189 lm/W | 80W Tier | U0 |
| 80W | 14,956 lm | 185 lm/W | 80W Tier | U0 |
| 100W | 18,313 lm | 182 lm/W | 140W Tier | U0 |
| 140W | 24,761 lm | 175 lm/W | 140W Tier | U0 |
| 165W | 30,639 lm | 185 lm/W | 200W Tier ★ | U0 |
| 200W | 36,805 lm | 182 lm/W | 200W Tier ★ Best Value | U0 |
| 240W | 42,872 lm | 178 lm/W | 300W Tier | U0 |
| 300W | 51,636 lm | 172 lm/W | 300W Tier | U0 |
Source: IES files tested on EVERFINE GO-2000B goniophotometer, 2026-04-07. All 9 wattages confirm 0.00 lm in 90–180° zone. IES file naming: AOK-[W]WoT02-NVS-L2 / AOK-[W]WOT02-NVS-L2.
Why efficacy is highest at low wattages
At 48W, the LED junction temperature is lower, thermal droop is minimal, and the driver runs at peak efficiency — yielding 191 lm/W. As wattage increases, junction temperature rises and efficacy trends down slightly to 172 lm/W at 300W. All values still significantly exceed OT Gen 1's peak of 163 lm/W and typical market alternatives at 130–150 lm/W.
Design Standards
IES RP-20-14 — Parking Facility Lighting
| Facility Type | Min Horizontal (fc) | Uniformity Max:Min | Min Vertical (fc) | CRI Min |
|---|---|---|---|---|
| Open Lot — Basic | 0.5 fc (5 lux) | 4:1 | 0.1 fc | 50 |
| Open Lot — Enhanced Security ★ | 1.0 fc (10 lux) | 4:1 | 0.25 fc | 50 |
| Covered Garage — Basic | 1.0 fc (10 lux) | 4:1 | 0.25 fc | 50 |
| Covered Garage — Enhanced | 5.0 fc (50 lux) | 3:1 | 1.0 fc | 65 |
| Entrance / Exit | 5.0 fc (50 lux) | 3:1 | 1.0 fc | 65 |
| Stairwells | 5.0 fc (50 lux) | 2:1 | 2.5 fc | 65 |
Source: IES RP-20-14 “Lighting for Parking Facilities”, Table 4.1
OT02 efficiency advantage: To hit 1.0 fc average on a 40,000 ft² lot, a 130 lm/W fixture might require 20× 200W units (4,000W total). OT02 at 182 lm/W @200W can deliver the same average with fewer or lower-wattage fixtures — directly reducing operating cost.
OT02 Exclusive Feature
DIP Switch Guide — Wattage & CCT Selection
OT02's DIP switches are the feature that eliminates the two most common parking lot lighting project headaches: wrong wattage and wrong color temperature. Here's exactly how to use them.
⚡ Wattage Selection
- 1Open the driver compartment door (tool-free, quarter-turn latches)
- 2Locate the DIP switch block on the driver (labeled with wattage settings)
- 3Use a small screwdriver or pen to flip switches to target wattage
- 4Close and latch the door. Fixture immediately outputs at new wattage.
Available tiers:
🌡️ CCT Selection
- 1Same process — open the driver compartment door
- 2Locate the CCT DIP switches (separate from wattage switches)
- 3Flip to 3000K (warm), 4000K (neutral), or 5000K (cool/daylight)
- 4Close door. Change takes effect at next power cycle.
Typical Scenarios
Installed and too bright?
DIP the 200W down to 165W. No crane, no returns. 5 minutes per fixture.
Client changed their mind on CCT?
Flip to 3000K warm white in the field. No reorder, no restocking fee, same day fix.
Stocking for multiple projects at once?
Order the 200W tier. Dial it to 165W for smaller lots, 200W for larger ones. One SKU, two projects covered.
Photometrics
Type IV T401 — Acuity/Lithonia-Class Optics
OT02's primary optic is the Type IV T401 — engineered to match the precision beam patterns of Acuity Brands and Lithonia Lighting, the recognized benchmark for commercial parking lot optics. This is not a typical generic “Type IV” — the T401 suffix denotes a specific asymmetric distribution optimized for parking lot pole spacing of 3–4× mounting height.
Type IV
T401 — Primary
Wide asymmetric forward throw. Ideal for single-row and double-row layouts. 3–4× mounting height spacing.
Type III
Perimeter Poles
Forward throw + minimal backlight. Use on perimeter poles adjacent to property lines or residences.
Type V
Intersections / Islands
Symmetric 360° spread. Use at central islands, drive aisle intersections, and pedestrian areas.
✓ Zero uplight confirmed — all 9 wattages, all optic types
Every OT02 IES file shows exactly 0.00 lm in the 90–180° zone. This is not a design target — it is the measured result from independent photometric testing. The physical full-cutoff housing prevents any light from escaping above horizontal, making OT02 compliant with Dark Sky requirements and any municipal ordinance requiring full-cutoff fixtures.
ROI Analysis
Energy Savings — OT02 vs HPS & vs OT Gen 1
OT02 200W vs 1000W HPS
| Metric | 1000W HPS | OT02 200W | Savings |
|---|---|---|---|
| System wattage | 1,080W (incl. ballast) | 196W (IES verified) | 82% reduction |
| Annual kWh (12hr/day) | 4,730 kWh | 858 kWh | 3,872 kWh |
| Annual electricity ($0.15/kWh) | $710 | $129 | $581/fixture |
| Maintenance/year | $165 (lamp + ballast) | $0 | $165 |
| Total annual savings | — | — | $746/fixture/year |
OT02 vs OT Gen 1 — Additional 15% Savings
For the same illuminance target (e.g. 1.0 fc average on a 40,000 ft² lot), OT02's 15–20% higher efficacy means you can use a lower wattage tier to achieve identical results. Example: where OT Gen 1 needs 200W, OT02 can deliver the same coverage at 165W — a 17.5% power reduction. Over 20 fixtures running 12hrs/day at $0.15/kWh, that's an additional $740/year saved on top of any HPS comparison.
Hidden Savings: DIP Flexibility
$0
Return & Restock Cost
DIP to correct wattage instead of returning. Typical restock fee: 15–25% of fixture cost.
75%
SKU Reduction
4 OT02 SKUs cover 9 wattages. Reduce inventory bins, simplify procurement.
0
CCT Return Events
Field-selectable 3000K/4000K/5000K eliminates CCT mismatch returns entirely.
20-fixture parking lot: $14,920/year savings vs HPS. With DLC rebate of $100–200/fixture, typical payback period under 14 months.
Spec Guide
Recommended OT02 Configurations by Lot Size
| Lot Size | OT02 Tier | DIP Wattage | Optic | CCT | Controls |
|---|---|---|---|---|---|
| Small (<50 spaces) | 80W Tier | 65 or 80W | Type IV | 4000K | Photocell |
| Medium (50–150 spaces) ★ Most Common | 140W Tier | 100 or 140W | Type IV (interior) + Type III (perimeter) | 4000K | Photocell + 0-10V |
| Large (150–300 spaces) | 200W Tier ★ Best Value | 165 or 200W | Type IV | 4000K | Photocell + 0-10V |
| Extra Large (300+ spaces) | 300W Tier | 240 or 300W | Type IV + Type V | 4000K | DALI + occupancy |
| Residential-adjacent | 140W or 200W Tier | 100–165W | Type III (perimeter) + Type IV | 3000K | Photocell + dimming |
| High-security / Hospital | 200W or 300W Tier | 200 or 300W | Type V (intersections) | 5000K | Motion + photocell |
Compliance
Certifications & Regulatory Compliance
DLC Qualified
Utility rebate eligible. $50–200/fixture from most US utility programs.
✓ All OT02 Series models
UL 1598
Listed for wet locations. Outdoor pole/arm-mounted luminaires.
✓ UL Listed
Title 24 (CA) §140.7
At 182 lm/W @200W, LPD is well under the 0.14 W/ft² limit.
✓ DIP 0-10V dimming included
IDA Dark Sky
Full cutoff housing + BUG U0 = zero uplight, all wattages.
✓ 0.00 lm in 90–180° zone (IES verified)
IP65 / IK09
Dust-tight and water jet resistant. IK09 impact resistance.
✓ Suitable for exposed outdoor locations
FCC Part 15
EMI compliance for LED driver electronics.
✓ FCC Part 15 Class B
Frequently Asked
OT02 Parking Lot Lighting — FAQ
How does OT02 DIP switch wattage selection work in the field?
Open the driver compartment door on the OT02 (tool-free). Locate the DIP switch block inside. Flip switches to select your wattage tier: 48/65/80W on the 80W SKU, 100/140W on the 140W SKU, 165/200W on the 200W SKU, or 240/300W on the 300W SKU. Close the door. The fixture immediately outputs at the selected wattage. No rewiring, no returns, no lead time.
How is OT02 Gen 2 different from OT Gen 1?
OT02 achieves 172–191 lm/W (IES verified) versus 146–163 lm/W for OT Gen 1 — a 15–20% efficacy gain. OT02 also adds DIP switch wattage selection (one SKU = 2–3 power levels) and DIP switch CCT selection (3000K/4000K/5000K field-adjustable), which OT Gen 1 does not have. OT Gen 1 retains IP66 vs OT02 IP65, and IK10 vs OT02 IK09.
Can I change the color temperature on OT02 after installation?
Yes. OT02 has a DIP switch for CCT selection: 3000K (warm white), 4000K (neutral), or 5000K (cool/daylight). Open the driver compartment, flip the CCT DIP switches to the desired setting, and close. Takes under 5 minutes per fixture. No returns, no restock fees, no project delays.
What does "Acuity/Lithonia-level optics" mean for OT02?
The OT02 Type IV (T401) optical distribution is engineered to match the precision beam patterns of Acuity Brands and Lithonia Lighting area lights — the recognized benchmark in commercial parking lot lighting. The T401 IES file shows a wide asymmetric forward throw with a sharp cutoff at 90°, achieving 0.00 lm in the 90–180° zone (U0) across all 9 wattage configurations.
Does OT02 qualify for DLC rebates?
Yes. OT02 Series is DLC qualified, making it eligible for utility rebates of $50–200 per fixture from most US utility programs. Combined with 172–191 lm/W efficacy (vs the DLC Premium threshold of ~130 lm/W), the payback period on a typical 20-fixture parking lot is under 18 months after rebates.
OT02 Series Gen 2
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