div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imagea href=https:reader039fdocumentsusreader039viewer20220402135ea6fdc1cac550298948c206html5page1jpg target=_blank img data-url=document520hz-audible-signal-low-frequency-audible-signal-nominal-voltage-24vdc-prcduceshtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: intranetusavisionsyscom · 520Hz Audible Signal Low Frequency Audible Signal Nominal voltage 24VDC Prcduces a 520 Hz low frequenq temporal 3 tone Temporal 4 pattern available when loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader039fdocumentsusreader039viewer20220402135ea6fdc1cac550298948c206html5thumbnails1jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imagea href=https:reader039fdocumentsusreader039viewer20220402135ea6fdc1cac550298948c206html5page2jpg target=_blank img data-url=document520hz-audible-signal-low-frequency-audible-signal-nominal-voltage-24vdc-prcduceshtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: intranetusavisionsyscom · 520Hz Audible Signal Low Frequency Audible Signal Nominal voltage 24VDC Prcduces a 520 Hz low frequenq temporal 3 tone Temporal 4 pattern available when loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader039fdocumentsusreader039viewer20220402135ea6fdc1cac550298948c206html5thumbnails2jpg width=140 height=200 adivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imagea href=https:reader039fdocumentsusreader039viewer20220402135ea6fdc1cac550298948c206html5page3jpg target=_blank img data-url=document520hz-audible-signal-low-frequency-audible-signal-nominal-voltage-24vdc-prcduceshtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: intranetusavisionsyscom ·...