LaserFocusThe VLF LaserFocus detector is a very early warning smoke detector designed to protect small, business-critical environments of less than 250m2 (for the VLF250) or 500 m2 (for the VLF500).

The detector works by continually drawing air into sampling holes in a pipe network. The air is filtered and passed into a detection chamber where light scattering technology detects the presence of very small amounts of smoke. Detector status information is communicated on the detector display and via relays or optional interface cards.

The patent-pending Ultrasonic Flow Sensing used in the VLF provides a direct reading of the sampling pipe flow rate. The system is immune to air temperature and pressure changes and is unaffected by contamination. The VLF is the first air sampling smoke detector to use ultrasonic flow sensing.

  • Ultrasonic Airflow Sensing
  • Laser-Based Absolute Smoke Detection
  • Pre-engineered pipe network designs
  • Programmable Alarm Thresholds
  • Clean air barrier optics protection
  • Instant Recognition Display
  • Instant Fault FinderTM
  • Field Service Access Door
  • Multiple Event Logging in separate logs
  • Event log – up to 18000 events
  • Offline/online configuration capability
  • Up to 250/500 m2 coverage
Dimensions Normal Enc185 H x 255 W x 90 D
Aspirator mA220mA (295mA in Alarm)
VLF 500 Aspirator mA410mA (490mA in Alarm)
Power Supply24v 3 Amp Switch Mode
Pipe VLF250Up to 25 m of pipe or 2 x 15m
Pipe VLF500Up to 50 m of pipe or 2 x 30m
Weight2 Kg
Serial ports1 x RS232