Why ECE R37 Matters
ECE R37 is the framework that makes LED retrofits legal. We ensure every approved product replicates its halogen beam pattern with precision and does not create dangerous glare.
For decades, upgrading to LED meant breaking the law. Halogen headlights were designed for halogen bulbs, and any modification - no matter how advanced - was technically illegal.
UN Regulation No. 37 (ECE R37) changed everything. For the first time, regulators established a legal framework for LED retrofit bulbs that can be installed in existing halogen housings.
But approval is not automatic. Each LED must prove it can replicate the beam pattern of its halogen predecessor with extreme precision. That is where we come in.
ECE-LEDr ensures that your upgrade enhances safety - not your liability.
ECE-LEDr Lab Report
Independent verification highlights for a submitted retrofit module.
Test ID: ISO-2501-A | Date: 2026.01.15
Lab Report: Sample Retrofit Module
1. Photometric
ECE R112 OK
48,500 cd
0.4 lx (limit 1.0)
"Glare remains below regulatory limit throughout the test cycle."
2. Thermal
Junction Temperature vs. Time
3. Geometry
| Metric | Standard | Measured |
|---|---|---|
| LCL | 25.0mm | 25.1mm OK |
| Base | PGJ19-2 | OK |