photoelectric Beam Detector(infrared detector) is  the besy equipment  to  protect  house safe . LCD voltage display installing easier

---Features  Specification: wireless or wired outdoor infrared beam detector or sensor ---Photoelectric Beam Detector (infrared  detector) introduction---Disqualification function Wired  system and BUS  system compatible , holographic spot real--time sport---LED display voltage ---Unique displaying receiving , transmitting  parts  with big power---Patented  balanced  checking , unique digital filtering ---Full function checking , self-adaption in environment and trouble locking ---Patented coaxial aspherical highly accurate lens with double focus---Unique DSP chip , patented  multi-dimensional mistake -corrective code, true detection alarm technology ---Adopts solid relay with long usage , non -contact, low voltage and little power consumption ---Upper and lower optical  mirror adjusting structure simultaneously , faster and more accurate adjustment ---Fully air-proof  structure .Can adjust beams withoout opening outer case