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9. Technical Information
Parameter Minimum Typical Maximum Unit
Alarm attenuations: 44%, 50% and 58% 44 58 58 %
Delay to Pre-alarm (threshold=84%) - 10 - s
Delay to Fault - 10 - s
Operating Distance (Separation between Detector and
Reflector) (4 reflectors required for >50m, >164ft)
5
16
- 120
394
m
feet
Rapid Obscuration Fault Threshold - ≥98 - %
Maximum angular alignment range of detector - - ±4.5 Deg
Tolerance to beam misalignment (per EN54-12) – Detector - ±0.5 - Deg
Tolerance to beam misalignment (per EN54-12) – Reflector - ±5 - Deg
Optical Wavelength - 850 - nm
Operating Temperature -20 - +55 °C
Storage Temperature -40 - +85 °C
Relative Humidity (non-condensing) - - 93 %RH
IP rating (Cat 2) - 53 - IP
Cable gauge 0.2 - 1.5 mm
2
Housing flammability rating - UL94 V-0 - -
Voltage Current Characteristics Unit
Operating Voltage 12 20 33 V
Normal Operating Current 3.7 2.5 1.5 mA
Current in Alignment/Targeting Modes 5.5 11.3 7.2 mA
Line-type smoke detector type FDL242 shall not be used in systems or components intended for
triggering or control of extinguishing systems.
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