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ICAO Medium Intensity Type B or Type C Obstruction Light
Universal AC & Universal DC Models
When powered up, the light will constantly check day/night status using its internal ambient light
sensor. The ambient light sensor averages its measurement for 30 seconds.
ICAO:
By default the lights turn ON when the ambient light decreases to not less than 35 foot-
candles (100 lux) and turn OFF when the ambient light increases to not more than 60 foot-
candles (150 lux). These limits can be factory adjusted, if required.
INTENSITY SETTING
The fixture will be supplied with an ICAO compliant optic.
The obstruction light will be pre-set to the intensity setting required to produce an ICAO compliant
photometric profile. The intensity is pre-set in the factory and does not need to be set by the user.
ALARM RELAY OUTPUT
In normal operation the relay is energised
• Terminal contacts COMM and NC of the relay are electrically closed
• Terminal contacts COMM and NO of the relay are electrically open
Whenever the LED is not lit due to a power failure and/or a LED failure the relay will not be energised.
• Terminal contacts COMM and NO of the relay are electrically closed
• Terminal contacts COMM and NC of the relay are electrically open
The alarm relay comes configured as follows:
• Relay normal operation (default, as described above)
The following alarm relay configurations are available as a special order. These must be specified at
the time of order:
• Relay inverse operation (inverse functionality of the normal operation, used to conserve power)
• Relay disable (in case the relay is not required, used to conserve power)
NOTE: The alarm relay is intended for low voltage (SELV) connection only.
NOT FOR MAINS CONNECTION
Operation & Setup