Cameras did not record video a white truck passing by. Picks everything else up.

[zackmacc]

Just wondering if anyone else has experienced this. We have two Arlos (HP Pro2). A white truck the size of a school bus passed both cameras at least twice and neither recorded a video. Yet the same cameras appeared to pick everything else up. I’m not sure how such a large vehicle can cross the trigger field without triggering a video where everything else does. Any ideas?

[SAub]

I've been having a similar problem for the past 2 weeks. See post Arlo Pro 2 detects motions but doesn't record...so... - Arlo Community. Where occasionally a camera doesn't record even though it has detected motion. 

I've submitted two tech support case with Arlo (case 42366270 and 42350855). So far I've gotten no solution from Arlo or even confirmation that there is a bug that is being investigated.

[jguerdat]

Remember that these cameras use PIR sensors and are designed to primarily detect people, not vehicles. The sensor works off IR emitted (or reflected) by the subject and generally have a detection range of ~25 feet for people. Vehicles can be detected farther away due to either large heat/IR signatures or by reflecting the sun's IR. However, that's out of spec for the intended usage.

If you read the camera positioning FAQ in the support section here, you'll see that the idea is to NOT have the street in view. Positioning them to be aimed at the door/sidewalk/whatever of real interest gets the best behavior. Trying to monitor the street will always be a crapshoot given the design parameters.