For monitoring of the set airflow in a duct
The Airflow Alarm monitors pressure conditions in a duct. A pressure switch connected to the control box provides the signal input. The Airflow Alarm is connected to the fan starter and automatically starts with the fan. An Alarm is trigged (Red LED light and relay terminal) when the air pressure in the duct is outside preset limits. The LED-lights are powerful enough to have good visibility at a distance. 2 independent terminals for power supply.The Airflow Alarm consist of control box, pressure switch, hose, inline filter, cable gland and 9V battery.