We have an alarm motion sensor 5' high in a corner of our living room.  There is an 18" (forced air) baseboard register (with fixed louvers) a few inches from the same corner.  Most of the forced air blows up and toward the corner.  There is also a rocker/recliner positioned diagonally in the same corner.  The angle of the back of the recliner directs any forced air that hits it back and up toward the sensor.  I don't want to move the sensor, the recliner, or the vent. 

Any suggestions on redirecting the airflow away from the corner?  Options:

a) Use a Magnetic Plastic Baseboard Air Deflector to deflect the air straight up (hopefully minimizing the air hitting the sensor), or down toward the floor.  I don't believe directing the air down is a good idea for room comfort, especially in cooling mode.  This is the easiest option to try.

b) I could block half of the louvers to force more air out of the opposite side of the vent, directing the forced air away from the corner.  This will probably make more vent noise, especially in stage 2.

c) I could try to bend the fixed louvers to direct the forced air away from the corner.  Some forced air may still be directed back to the corner by the recliner.

Thoughts/other suggestions?

This may not even be an issue, but I'd like to have a solution ready in case of a problem.  Has anyone experienced problems with heating or cooling mode either tripping a motion sensor, or interfering with the sensor's ability to detect a person?

Thanks!

Perhaps tilt the sensor upward a little to restrict its downward view. Or a shield below it.

I have had ventilation move something that triggered a sensor, but never seen raw airflow cause issues. Is it tripping the sensor? You can also turn the system on and walk test that sensor, I am assuming it has an activity indicator, then turn the heat off and walk test it again to see if there is any difference in sensor reaction... Move in slowly till it trips, drop something to mark your spot, back away and stand still till the sensor resets. Move to a different angle and again approach slowly till the sensor trips and mark that spot. The marks will give you a way to gauge performance between heat on and off.

Thanks guys.  Good thoughts.

No problems yet, but the alarm system is still new.  My confidence in it is building daily.