PIR motion detector - HOW IT WORKS (easy to understand)

For 40 YEARS I've been working with PIRs. Ever wondered what they can actually see?
Explained so that ANYONE can understand it, it's another QUALITY video from the mrmattandmrchay channel.
Thank you for watching!
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NOTE: PIR PLAYLIST IS NOT COMPLETE (mentioned at end of video) - more PIR examination videos almost ready for upload!
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Please give us a 'like', thank you! :)
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MERCHANDISE AVAILABLE! Please support our channel by getting Siren and Lift merch from: http://www.mrmattandmrchay.com
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IMPORTANT NOTICE ABOUT SAFETY AND YOUTUBE:
The mrmattandmrchay channel is a RESPONSIBLE and RESPECTABLE channel.
I do not promote or glamourise dangerous activities on any of my videos.
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THE MRMATTANDMRCHAY CHANNEL, established 2008:
I'm passionate about uploading quality and interesting videos for YOU, my audience.
What is my channel about? "Old lift machinery made interesting", old air-raid sirens, prehistoric alarm equipment. If "I" don't find it interesting ...then IT DOESN'T GET UPLOADED!
I always spend a lot of time editing my videos with animations, video in-sync with music and voice overs to make them this way.
My moto - "Quality NOT Quantity" - this video took 2 MONTHS to edit!
But without you, I'm nothing here. Thank you so much for watching.
...mrmattandmrchay is me (Matt) and my son Chay.

THANK YOU very much for watching :)