VESDA VLQ: Very Early Warning Fire Detection (VEWFD)

Very Early Warning for small areas up to 100m2 (1,000 sq.ft),
• Up to four (4) Class‐A holes
• Mitigates the effects of dilution due to high airflow
• Minimizes downtime and service interruptions
• Allows more time to respond to remote sites
• Minimizes damage to equipment from the corrosive properties of smoke


  • EN 54-20


The VESDA VLQ detector is a cost-effective Aspirated Smoke Detection (ASD) solution that meets the unique needs of numerous small area applications of up to 100 m² (1,000 ft²). Examples of these include telco landline remote offices, base station controllers, remote base stations, small server rooms, data centre containers, critical equipment, packaged HVAC units, anechoic chambers, pump houses, generator enclosures, signalling huts and modular laboratories, just to name a few.

VLQ detectors are suitable for both high and normal sensitivity applications and offer many installation advantages in terms of out-of-box operation, stand-alone functionality and simplified pipe network.


  • Laser-based absolute smoke detection
  • Clean air barrier for optics protection
  • Up to 100m² (1,000 ft²) coverage
  • Up to 2 x 6 m (20 ft) linear or up to 2 x 9 m (30 ft) branched pipe lengths
  • 2 or 4 Class A / VEWFD sampling holes
  • Metric/Imperial pipe inlets
  • Pre-alarm, Alarm and Fault Relays
  • 5 LEDs, Pre-alarm, Fire, Fault, Filter, Power
  • Monitored on-board filter
  • AutoLearn™ Smoke
  • General Purpose Input (GPI)
  • IP30 enclosure
  • Xtralis QSC support
  • USB port for PC connection
  • Event log
  • Low power consumption
  • Configuration via DIP switches


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