Comments on: Will a standard PIR work in an area lit by IR lighting? http://learncctv.com/2010/01/will-a-standard-pir-work-in-an-area-lit-by-ir-lighting/ Helping you learn all about CCTV Systems Sat, 31 Jul 2010 22:57:31 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Ed http://learncctv.com/2010/01/will-a-standard-pir-work-in-an-area-lit-by-ir-lighting/comment-page-1/#comment-35 Ed Tue, 26 Jan 2010 03:39:39 +0000 http://learncctv.com/?p=38#comment-35 yes. The PIR is looking for changes, so it would ignore the steady state lighting, no matter what frequency. yes. The PIR is looking for changes, so it would ignore the steady state lighting, no matter what frequency.

]]> By: David D http://learncctv.com/2010/01/will-a-standard-pir-work-in-an-area-lit-by-ir-lighting/comment-page-1/#comment-34 David D Sun, 24 Jan 2010 05:05:31 +0000 http://learncctv.com/?p=38#comment-34 It will probably work... The PIR ( passive infrared sensor) usually senses radiation in the range of 8-14 microns - your body heat. The IR illumination used for CCTV is usually limited to silicon sensitivity which cuts off at 1.1 micron on the long wavelength end. They don't overlap It will probably work…

The PIR ( passive infrared sensor) usually senses radiation in the range of 8-14 microns - your body heat. The IR illumination used for CCTV is usually limited to silicon sensitivity which cuts off at 1.1 micron on the long wavelength end.

They don’t overlap

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