it is ok, it works, the one thing i dislike about it is that it is factory defualted to motion scan, so if you move the unite it scans. there is no way that i can find to reprogram the defualt. so be carefull so you dont scan your eyes with it. i would suggest buying one that does not come with a stand they seem to programed for the trigger only. the manual that comes with it is usless.
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