A-LIOL2 Steady-Burning Red LED Obstruction Light

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  • Long-life low-energy LED technology lasts years longer than incandescent lights.
  • Weather proof, corrosion resistant housing of heavy-duty anodized aluminum.
  • Side and Bottom mounting holes are positioned for easy universal installation.

The A-LIOL2 LED Obstruction Light is an economical alternative to incandescent lighting for towers or masts. Rugged construction, low power consumption and long life make this ideal for structures requiring a Low-Intensity light. This light has been designed to meet the Australian CASA MoS part 139 requirements, subsection 9.4.6.

The A-LIOL2 unitizes a tightly regulated power supply to maintain consistent photometric output under a wide range of operating conditions.  As a result the light is highly resistant to voltage swings, brown-outs, surges and spikes. The same features that provide steady illumination also make the A-LIOL2 uniquely suited for use where intense RF fields may be encountered.


Austin’s A-LIOL2 may be operated as an independent unit, or be installed as part of a complete set of beacons and side-lights. It is also compatible with existing photocell controls.

The A-LIOL2 utilizes redundant LED elements, so light output is maintained at required levels in the unlikely event of multiple LED failures.

Technical Specification

Technical Specification

Austin A-LIOL2 Diagram

  • Input Voltage: Nominal 115 or 240 volts at 50/60 Hz.
  • Constant Light Output that meets or exceeds regulatory requirements for input voltages ranging from 100 to 130 volts, or 205 to 255 volts.
  • Maximum Load: 0.11 amps – 14 VA (at 115 volts input); Australian model specs to come
  • Electrical Fittings: Capable of side or bottom mounting, using 3/4″ NPT or M20 x 1.5 metric fittings.
  • Physical Mounting: Pipe or flat base plate may be used.   Universal tower mounting brackets are an optional extra.
  • Total Weight: 8.8 lbs (4 kgs)

Operating Temperature:
-55 to +55 C

Photometric Output:
Meets or exceeds:
CASA MoS 139 9.4.6

Terminal block will accept up to #12 stranded wire.

On terminal block

Electrical / Mounting Fittings:
1 side port and 1 bottom port.   Either 3/4 NPT or M20 x 1.5 metric thread.

Flat Plate Mounting:
3 mounting holes, 5/16″ (8 mm). (See diagram on right)

High-temperature shock-resistant prismatic glass globe.
Cast Aluminum housing.
Neoprene weather gaskets.

14 lbs. 8 x 8 x 15
6.3 kgs. 21 cm x 21 cm x 38 cm

Electrical Minimum Typical Maximum
115 Volts:
50/60 Hz
100 V 115 V 130 V
65 mA 79 mA 108 mA
6.5 VA 9.1 VA 14 VA
230 Volts:
50/60 Hz
205 V 230 V 255 V
35 mA 41 mA 52 mA
7.2 VA 9.4 VA 13.3 VA


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