Senses and alerts user when airflow condition are low
Includes: face plate with circuit board, electrical power pack, vinyl tubing and airflow tube adapter, night setback, external alarm and alarm mute functions
Set point from 30 to 250 fpm using a velocity meter and screwdriver
LED lights show red for alarm when sash is raised above maximum safe working opening height, yellow for caution and green for normal
Specifications
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