Vesda VLF-500 (VLF-500-00) Very Early Warning Smoke DetectorThe VESDA VLF 500 detector is a very early warning smoke detector designed to protect small, business critical environments of less than 500 m (5,380 sq. ft.) 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

Master Control Keyboard

and universal designs that are ideal for all indoor applications

This product is for use with 4100 and 4120 Series Addressable Fire Alarm Detection and Control Panels

Heat Element Rating 135ºF

Mounting plate (included) provides plug-in design for easier installation and shorting springs to check wiring continuity

is powered directly from the SLC loop

With the PLEX option installed the on-board annunciator is protected by a UV stabilized polycarbonate clear window

Cover White for APPLW-O Models

Size B 3/4 Inch

This makes it possible to use 24 Vdc fire alarm power supplies to provide power for 12-volt security devices

The elbow fitting is part of the VESDA integrated pipe and fittings system engineered specifically for ASD installations

Trim rings G1TR