E> CORTEX PASSIVE INFRARED DETECTOR EX-35 TWICE THE FEATURES AT HALF THE COST The KC-35 Combines A Unique Dual Purpose Lens, Patented Multi-Focus Technology and Electable Sensitivity fo Create 4 Precise Detection Pattern Selections, The EX 35 breaks the mold of low cost, ‘quality deficient ‘detection: You can select between precise Wide Angle or Long Range Coverage, and also Multi-Level or Pet Alley Detection Patterns.