... kinds of sensors 1. Description:Pet immune PIR motion detector is designed with high technology. It features high ... between two alert: 6 second6) Low batter indicator: Led flash one time per 5 second7) Detected range: 110 ... place where intruder must enter.Do not face the detector to any area where window, lamp-house, ... 1.5~2.5 m2).When power is on, LED flashes, it has initialized time. Please do not ...