rowan_butler93•2mo agoProlific Poster

Question about programming motion sensors in high ceiling spaces

I keep seeing guys set the walk test time way too low in commercial spaces with 20 foot ceilings. They'll use the default 30 seconds, but with that height, the sensor's field is huge and it takes longer for a person to cross. I learned this the hard way on a job in a warehouse in Cincinnati last month. I set it to 60 seconds and the false alarms stopped completely. What's the highest ceiling you've had to adjust for?

3 comments

3 Comments

mark6762mo ago

So you set it to 60 seconds and that fixed it, but what about the actual detection pattern? Did you have to tilt the sensor down more to keep it from seeing too much of the far wall?

tylerr392mo ago

Did you check the manual for the detection pattern diagram? I read somewhere that tilting it down 10-15 degrees helps narrow the coverage zone so it doesn't catch as much of the opposite wall. I ended up doing that with mine and it stopped the false triggers from the far corner.

terry_bailey3514d ago

Wait, you tilted yours down 10-15 degrees? That's way more than I thought. I just eyeballed it and gave it maybe a 5 degree tilt, but I guess I was being too cautious. I was worried about creating a dead zone right in front of the sensor where it wouldn't see anything. But if you did 10-15 degrees without issues, then maybe I need to go back and try that. Because my false triggers from the far wall are still happening every other day, especially when the sun hits that corner just right. @tylerr39, did you need to raise the mounting height to compensate, or did the angle alone fix it?