• Shop Online
Get a Quote

L-810 Incandescent Red Obstruction Light

This product is available in our webstore – Shop Now

Made in USA Buy American Act


FAA AC: 150/5345-43J
ETL Certified L-810
ICAO Annex 14, Vol. 1, Type B

Flight Light L-810 obstruction lights are used on buildings, antennas, towers, cranes, and any other kind of obstacle which occupies airspace. Each fixture includes a glass Fresnel globe which is colored red for most applications. The fixtures are either a single or a double lamp housing and made with 3/4″ or 1″ internally threaded housing. A side-mounted option is also available. These obstruction lights operate on a 120V or 230V circuit. The fixture includes an incandescent 116W, A21 medium screw base lamp.


• The only FAA certified L-810 incandescent red obstruction light produced in the world.
• Night Vision Goggle (NVG) friendly, NVIS compatible for military, police, and EMS applications.
• Direct installation into existing voltage power circuit.
• Direct mounting to conduit, bottom or side mounting options available.
• Standard configurations come with 3/4″ threaded fittings.
• Photocell option for automatic activation at night.

Ordering Codes

Fixture Color Power Fixture Style Mounting Options
FL-810 R: Red AC1: 120VAC[1]
AC2: 230VAC[2]
S: Single
D: Double
34B: 3/4″ Hub – Bottom
10B: 1″ Hub – Bottom
34S: 3/4″ Hub – Side
10S: 1″ Hub – Side
FF: Floor Flange
LSM: Low Surface Mount[3]
F: Flasher[4]
P: Photocell (81020 Series)
T: Transfer Relay
MT: Marine Treated
R: Red Casting
[1] FAA Approved: 120VAC, red globe, 116W lamp #32B. [2] Not FAA Approved. [3] For single option only. [4] Flasher not available for 277VAC.
Shipping Weight: (Single): 4.5 lb./2 kilo., Volume: 0.5 cu. Feet/0.01 cu. Meters; (Double): 10 lb./4.5 kilo., Volume: 1 cu. Feet/0.02 cu. Meters.

Common Replacement Parts

Part Number Description
13-861R-T Red globe with tether
61-80001* Clamp band
61-80004 Medium base socket
LA-22483-2 116W, 120V lamp
LA-116W/230V 116W, 230V lamp
61-80002 O-ring
* Clamp band only compatible with Flight Light fixtures.

Obstruction Lighting Controls

Lighting controls are designed for use when multiple obstruction light fixtures are to be controlled with common electronics or when alarms or transfer relay circuits must be switched remotely from the fixture. The electronic control module comes in a cast iron device box with threaded hubs on both top and bottom. Replacement modules (controls without device box) are also available upon request. Photocell options, available for models 81001 and 81002, are built into the cast iron device box.

Obstruction Light Controller Model 81001


Model 81001 120VAC, 2500W, 30 FPM flasher. Includes circuitry to reduce EMI for sensitive RF locations. Beacon tower flasher. FAA approved.

Model 81002 120-240VAC, 2400W flasher. Adjustable rate flasher, 10-100 FPM.

Obstruction Light Controller Model 81010

Lamp Alarm/Transfer Relay

Model 81010 120VAC lamp alarm or transfer relay module. Monitors current for one to four 116W fixtures or one L-864 fixture with two 620W lamps. If any fixtures are detected out, 120VAC (1A) output and a 10A isolated relay (SPDT) are activated. Can be used as a transfer relay with isolated alarm for double obstruction fixtures with one primary and one standby lamp. For Buzzer option, add ‘-B’ to model number.

Model 81011 120VAC lamp alarm for two to nine steady-burning, incandescent lamps. Monitors current for two to nine 116W fixtures. If any fixtures are detected out, 120VAC (1A) output and 10A isolated relay (SPDT) are activated.

Obstruction Light Controller Model 81020


Model 81020 120VAC, 1000W photocell. FAA style photocells activate at 35 ft-cd and turn off at 58 ft-cd. A 45 second time delay prevents activation and de-activation from momentary light conditions. Does not come with device box, includes 1/2″ threaded male fitting.

Obstruction Light Controller Model 81021
Model 81021 120VAC, 4800W photocell. Meets FAA/FCC requirements for obstruction lighting. Energized at 35 ft-cd and de-energized at 60 ft-cd. Time delay eliminates contact chatter. Contains dual 20A load contacts. Front plastic housing mounts to cast aluminum junction box (included).

Obstruction Light Controller Model 81022
Model 81022 Hazardous Location Photocontrol Unit. Outdoor lighting control for exterior lighting in hazardous locations: explosion proof, dust-ignition proof, and weatherproof. Nominal Voltage 50/60 Hz: 120/208/240/277. Voltage Range: 105-305. Housing: sand cast copper-free aluminum – epoxy powder coated.

Ordering Codes for Obstruction Lighting Controls

Fixture Type Model
FL- 81001: HP Flasher (120VAC, 2500W)
81002: MP Flasher (adj. 10 amps)
81010: 1-4 Lamp Alarm/Transfer Relay (Buzzer option ‘-B’)
81011: 2-9 Lamp Alarm (steady-burning incandescent)
81020: Photocell only (120VAC, 1000W max)
81021: Photocell with aluminum box (120VAC, 4800W max)
81022: Hazardous Location Photocontrol Unit

Interested? Get a Quote

Have a product question? Need a quote? Please fill out our online quote request form.

Get a Quote