VLP-400 VESDA Laserplus Detector with FOK LEDsThe VESDA VLP by Xtralis is the flagship of the VESDA aspirating smoke detector product line. Using unique detection principles, the VLP has an alarm sensitivity range of 0. 005%20% obscuration m (0. 0015%6. 25% obscuration ft). The detector can form part of a modular system with the display, programmer and VESDAnet modules installed in a remote location or as a "self contained" system by replacing the detector's panels with display and or programmer