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Outdoor intruder detection beams with anti-masking
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<blockquote data-quote="Askie" data-source="post: 1123263" data-attributes="member: 25982"><p>I was also thinking that.</p><p></p><p>However chrisc mentioned above you cannot get within 1 metre of an NV780 without the alarm going off (I assume he means that also to be true if you approach it from the front, thus from "outside" its field of vision). The security firm who quoted me the Optex BX-80's (which doesn't have anti masking) also said something similar... that it would be very difficult to successfully mask a BX-80 without it detecting you and setting of the alarm.</p><p></p><p>I'm really curious how this could be. Both the BX-80 and the NV780 only "see" to the sides according to their documentation. So how is it possible then that they can detect you from close range if you try approaching them from the front? This is what I understand from chrisc and our security firm. I hope chrisc would elaborate...</p></blockquote><p></p>
[QUOTE="Askie, post: 1123263, member: 25982"] I was also thinking that. However chrisc mentioned above you cannot get within 1 metre of an NV780 without the alarm going off (I assume he means that also to be true if you approach it from the front, thus from "outside" its field of vision). The security firm who quoted me the Optex BX-80's (which doesn't have anti masking) also said something similar... that it would be very difficult to successfully mask a BX-80 without it detecting you and setting of the alarm. I'm really curious how this could be. Both the BX-80 and the NV780 only "see" to the sides according to their documentation. So how is it possible then that they can detect you from close range if you try approaching them from the front? This is what I understand from chrisc and our security firm. I hope chrisc would elaborate... [/QUOTE]
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Outdoor intruder detection beams with anti-masking
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