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FDR26 Optical Smoke Detector is designed to detect smoke and signal a fire alarm.

  • If the detector senses smoke, a relay is activated. Since FDR26 does not react to temperature changes, it is suitable for installation in data centers and telco rooms.
  • Optical smoke detection reacts to smoke that enters the detection chamber. Presence of smoke is indicated by turning on a LED and switching a relay. Smoke is detected only if it directly "hits" the sensor. The alarm ends when the detection chamber is free of smoke particles.


Power: 10.5...14V DC
Start-up time:  60 s
Alarm indication: Red LED, switching a relay
Relay contact: up to 1A / 30V DC (0.5A / 125V AC)
Detection: Contains an optical detection chamber
Protected area:  Max. 40 m2 (430 sq. ft), max. height 7 m (22 ft)
Distances:  Max. distance between detectors 8 m (25 ft), max distance from a wall 4 m (13 ft)
Operating temperatures: 0°C to 70°C (32°F to 158°F)
Max. air velocity:  600 m/min
Measuring period: 3 to 5 seconds
Test:  Alarm can be activated by holding a magnet near the TEST point
Standard: Conforms to EN54-7
Operating environment: Indoor
Cover: IP 42 (EN 60 529) 


Contact us

Vrážská 1418
153 00, Prague 5
Czech republic


Phone: (+420) 723 069 809
Fax: (+420) 773 553 054
E-mail: sales@st-hw.com 



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