With E-Shield, modulated beams of IR light are sent between the transmitter and receiver to form an invisible wall of protection. Due to the excellent outdoor
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Active Infrared Beam Sensor Reliable Infrared Barrier Alarm for
Never sleeps, never even blinks': the hi-tech Anduril towers
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A substrateless, flexible, and water-resistant organic light
Active infrared beams: Maxiris 3000
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