With its 4 x 12m PIR detectors giving up to 180 degrees of effectively pet immune coverage, the MS-12FE remains the professional choice for reliable, trouble-free outdoor motion detection. Incorporating key features such as day/night discrimination, variable timer alarm relay, NO/NC output, pulse count and sensitivity adjustments, there really is no need to look further. 2x Dual-Zone sensor heads can resist detection of small animals. Advanced Variable Multi-area Detection System. Selectable NO/NC relay output with Timer Function. Day/Night Sensing. Adjustable Pulse Count & Sensitivity. 0.8-1.2m Mounting Height.