Takex's PB Series Sensors feature double modulation frequency and phased-locked loop system which result in high-power beams that have 10x the maximum arrival distance and 100x maximum sensetivity. Simultaneous breaking of 4 beams is required to initiate an alarm, thus eliminating the most common causes of false alarms - small animals, falling leaves. Features Anti-external light circuit provides tolerance for sunlight, mercury or fluorescent light. Excellent tolerance for bad weather. Confirm visual and audible beam alignment with Sound Check Function Attentuation LED lights up when beam attenuates under a certain level. AGC Circuit automatically maintains proper sensitivity depending on environmental conditions. Special noise eliminator provides excellent RFI. Special hood protects sensor against inclement weather Specifications
Detection System Quad, Active Infrared Beam Wavelength 940nm Modulation Double Pulse Modulation Protection Distance Outdoors 50m (165ft) Protection Distance Indoors 100m (330ft) Signal Arrival Distance 500m (1650) Response Time 50-700msec.