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Dahszhi Dual Laser Detector Alarm Beam Sensor Indoor 300m Outdoor 60m Infrared Detector 6.7"x3.1" - - Amazon.com
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Amazon.com : CPVAN Motion Sensor Alarm Indoor, Wireless Security Motion Detector Alarm with Siren (125dB, 40ft PIR Detector, 328ft Remote Control), Portable Door Chime Bell Alert for Home Garage Shed Shop :
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