VESDA VLF-500 LaserFOCUS Small Area Aspirating Smoke DetectorVESDA VLF 500 LaserFOCUS Aspirating Smoke Detector (VLF 500 00) The VESDA VLF 500 LaserFOCUS aspirating smoke detector (VLF 500 00) is designed to deliver very early warning fire detection in small to medium critical environments. Part of the Honeywell Xtralis VESDA range, the VESDA VLF 500 continuously samples air through a micro bore pipe network and analyses it using advanced laser smoke detection technology to identify smoke particles at extremely