940-GSM4
Appendix I: PIR Detection Zone
Appendix I: PIR Detection Zone
Figure 5 shows 5 kinds of detection ranges at different detection angles. This
camera has an 120 foot detection zone with a 60 degree PIR.
Figure 5. PIR Detection Zone
The PIR detection angle (α) is smaller than the field of view (FOV) angle (β). The
advantage of this design is to capture most, if not all, motions.
Figure 6. Detection angle vs. FOV angle
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