Arlo false alarm perhaps due to slight house movement when bus passes by.

[alohagrace]

Hi there, 

My camera is installed inside the property behind the iron gate (The iron gate also has a plastic shield).  My camera's setting is set to detect only motion and not audio.  There is a bus that runs every 20 minutes in front of the house.  Every time the bus goes by, there is a false alarm. Now, I don't think that Arlo would be capturing the bus movement beyond that iron gate and glass shield.  It's pretty far away and the glass shield is probably giving off reflection.  At least when playing the video, I do not see the bus at all.  The house/property does shakes a little when the bus passes by.  My suspicious is that that might be what causes the Arlo to capture the motion.  The only motion I want to capture is if someone opens the iron gate.  Is there any suggestion what could eliminate this false alarm? 

Thank you!

[TomMac]

Move camera and or lower sense level... A screen shot of cam would help

Doubt it the vibration.