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Electrician Talk Forum
Decent external PIR sensor with sensitivity adjustment
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<blockquote data-quote="Richard-the-Ninth" data-source="post: 541513" data-attributes="member: 23472"><p>Ideally a mains operated PIR should point at a downwards angle so it can not see too far, as often devices that you can adjust the "range/sensitivity" fail and see nothing.</p><p></p><p>I recently had to change a few external mains PIRs and I used the ones from screwfix, the original ones they sold lasted roughly 8 years before the sun got too much for them (It makes the polythene lens brittle, so it cracks.........) now they have the ones special location linked to. I tried a few of them, only to find that they would activate when ever they wanted to, I even covered one with tinfoil, so it can not see (They can see through polythene and some other plastics) it still activated. I tried some from an online supplier, same problems, I have come to the conclusion that most mains operated PIRs are now made by the same company to a cheap price.</p><p></p><p>Let us know how you get on.</p><p></p><p>Kerching posted last year saying KSR PIRs are ..............see for yourself <a href="https://electricianforum.co.uk/threads/ksr-lighting-never-again-and-i-would-advise-others-never-to-waste-their-money.55665/" target="_blank">click here</a></p></blockquote><p></p>
[QUOTE="Richard-the-Ninth, post: 541513, member: 23472"] Ideally a mains operated PIR should point at a downwards angle so it can not see too far, as often devices that you can adjust the "range/sensitivity" fail and see nothing. I recently had to change a few external mains PIRs and I used the ones from screwfix, the original ones they sold lasted roughly 8 years before the sun got too much for them (It makes the polythene lens brittle, so it cracks.........) now they have the ones special location linked to. I tried a few of them, only to find that they would activate when ever they wanted to, I even covered one with tinfoil, so it can not see (They can see through polythene and some other plastics) it still activated. I tried some from an online supplier, same problems, I have come to the conclusion that most mains operated PIRs are now made by the same company to a cheap price. Let us know how you get on. Kerching posted last year saying KSR PIRs are ..............see for yourself [URL='https://electricianforum.co.uk/threads/ksr-lighting-never-again-and-i-would-advise-others-never-to-waste-their-money.55665/']click here[/URL] [/QUOTE]
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Decent external PIR sensor with sensitivity adjustment
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