DS-2CD2432F-IW PIR question

Ecko404

BIT Beta Team
May 5, 2014
111
23
Montreal, Canada
Quick question, I am using the PIR alarm and I get a lot of false recording, can it be a fan, blowing air in front of the camera?
 
First time (few days ago) motion detection was back on "magically". I formatted the SD card and everything was fine.
Second time, today, no. Just to be sure I deleted the motion area. Will see how it goes!
 
I put the fan back in the cam field of view today and it started recording. No motion is setup, only PIR.
Took the fan off the camera, PIR recording stopped.