div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page1jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails1jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page2jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails2jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page3jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails3jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page4jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails4jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page5jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails5jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imagea href=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5page6jpg target=_blank img data-url=fitchca-detector-photoelectoric-detectors-detect-intruders-when-both-the-upperhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: fitchca DETECTOR Photoelectoric detectors detect intruders when both the upper and lower invisible infrared beams are simultaneously broken apply wire loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentsmxreader043viewer20220308235b3929887f8b9ab9068e32f7html5thumbnails6jpg width=140 height=200 adivdiv
