Description Specifications Description The Alnor® AirGard® Lab Hood Monitor Model 335-D surpasses the protection offered by go/no-go monitors like the 200 & 405 models. It features prominent LEDs to indicate hood status, a digital display of the actual measured face velocity and the ability to warn of unsafe high face velocities, increasing user confidence in lab hoods. Features and Benefits Color analog LCD display to indicate face velocity May also be configured to display face velocity digitally Display and alarm range is 50-250 fpm (0.25-1.27 m/s) Jumbo red LED and audible alarm (85 dB @ 4" [10 cm]) State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications Display range:50-250 fpm (0.25-1.27 m/s) Alarm range:50-250 fpm (0.25-1.27 m/s) Field set-up:2 point velocity set-up Alarm set points:low and high Repeatability of alarm set points:±10% of reading or 10 fpm (0.05 m/s), whichever is greater Alarm delays:User configurable through menu Relay output:2Remote alarm acknowledge:Yes Units:Selectable (English & Metric) Display-visual:Analog bar graph, jumbo LEDsRed zone: alarmYellow zone: marginalGreen zone: normal(Digital LCD can be enabled) Alarm indications:Jumbo red LED and audible alarm (85 dB @ 4" [10cm])High flow alarm disable:Yes Emergency purge:Yes Horn silence:Temporary and permanent Literature & Docs Accessories