The FLX-P-ST FlipX Series Professional Indoor PIR Detector from Optex is a wired indoor PIR detector with a pyroelectric element and rotatable lens. By removing the case and flipping the lens 180°, you can adjust the detection pattern from 85 to just 5°, for coverage from large open spaces to long narrow passages or windows. As part of the FlipX series, the FLX-P-ST is ideal for indoor environments ranging from residential to high-end commercial.