[GH85Carrera]

Originally Posted by red-beard

Flow switch.

Air Flow Switch for DC/ AC Voltage Supplies (Type 3201.-/3204.-)

These are factory set to 3m/s or about 10 feet per second. You will need to duct some air or place it in an area sure to sense flow.

I could not find a price for that flow meter. It is 100 bucks or 1000 bucks? That does make a difference. Where did you find the metal vent? I need one of those for the house. Or crazy dog decided the plastic driver vents are tasty and destroys one about every two months.