The EX-35T breaks the mold of low cost, quality efficient detectors. You can select between precise wide angle and long range coverage, and also multi-level or pet alley detection patterns. By incorporating our patented multi-focus technology into the spherically designed lens, the EX-35 has successfully eliminated sensitivity problems caused by changes in detection patterns EX35T 35X35 PIR DETECTOR 55X5.5' WITH TAMPER