Directly from Ivan... it explains why it does it.
Quote:
V1 alerts sooner, and tis is normal, just thing on those false alerts on V1 Smile also there is another reason why... V1 is mounted INSIDE you car behinde front glass , and LI is out. First inpresion would be that LI have easier job of detecting it because it is out, but main difference is the word detecting.. alerting to it and detecting ANY IR beam and dedicated patern of pulses in IR beam is 2 different stories, also in this case when V1 is behind the glass , this same glass is acting as a one big lens, it is a IR filter (pulse filter) but IR light will come thru, filtered and then hit V1 big ass lense and make alet, so in this case how big is your scrand defines a possibilty to detect (alert) some scater of IR light..
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