Dwyer® Air Velocity Monitor

This inexpensive accessory easily mounts on your fume hood to indicate approximate face velocity and to warn you when air flow is too low or too high.
Specifications: Red LED indicates low-flow, adjustable from 0 - 150 fpm. A low-flow audible alarm also sounds, requiring manual acknowledgement to silence. Green LED indicates normal operation. Yellow LED indicates high flow, adjustable from 0 - 275 fpm. Compatible with noncombustible, noncorrosive gases. Constructed from white plastic. Measures 2-3/4"L x 4-1/2"W x 2"D. Includes 3'L, 1/2"-dia. flex tubing, a 90° bulkhead fitting and two nylon ties for mounting to a fume hood.
Options: Use the Step-Down Transformer to convert your 120V AC power supply to the required 24V AC.