
HORIZON L-810IR LED Obstruction Light
Dual-mode red and infrared LED obstruction light built for NVG-equipped operations where visible red must coexist with 860 nm IR output.
The HORIZON L-810IR combines a standard FAA Type L-810 red steady-burn or flashing LED output with a simultaneous 860-nanometre infrared channel, meeting the growing requirement for obstruction lighting that is visible to Night Vision Goggle (NVG) equipped aircrew as well as the unaided eye. This matters wherever military, law enforcement, or EMS helicopter operations occur in proximity to lit structures — the infrared channel makes the obstacle detectable through NVGs without increasing the red visible-light pollution that disrupts cockpit night adaptation.
The unit operates from a wide input range — 95 to 256 VAC or 9 to 48 VDC — making it compatible with virtually any existing L-810 circuit, whether mains-fed or battery-backed solar installations. Nominal power draw is 4.0 W on AC and 3.4 W on DC, a fraction of the incandescent equivalents it replaces. Operating temperature spans ±55°C, covering the full range from Gulf summer rooftop conditions to high-altitude mountain sites.
The L-810IR is offered in single or double configurations and is a direct physical replacement for the H&P OB20 series and most other manufacturers' L-810 fixtures via a standard 1-inch bottom-hub connection with included reducers. This backward-compatibility means airports, heliports, and tower operators can upgrade to IR-capable lighting without rerunning circuits or replacing mounting hardware.
Typical deployment targets include hospital and offshore helipad perimeter lights, communication tower low-level indicators, airport building and hangar corners, and any structure within a military training or operational airspace corridor. The combination of wide-voltage tolerance, minimal power draw, and sub-5 W consumption makes the unit suitable for solar-battery installations at remote or temporary sites.
Technical specifications.
| IR peak wavelength | 860 nm |
| AC input range | 95–256 VAC |
| DC input range | 9–48 VDC |
| Nominal power (AC) | 4.0 W |
| Nominal power (DC) | 3.4 W |
| Operating temperature | ±55 °C |
| Humidity tolerance | 95% RH |
| Mounting connection | 1-inch bottom hub (reducers included) |
| FAA type | L-810 IR (flashing or steady burn) |
Use cases.
- ›Obstruction marking on structures within NVG-operating military or EMS helicopter corridors
- ›Low-level tower indication at communication masts, helipad perimeter posts, and rooftop plant
- ›Direct retrofit into existing L-810 incandescent or xenon sockets without circuit modification
- ›Solar-battery remote installations where sub-5 W consumption is a system constraint
- ›Airport building and obstacle marking in dual civil/military airspace environments