Vintage Archer / Radio Shack / Tandy Infrared Photorelay / Alarm System 49-201
$49.50
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Archer Radio Shack Tandy Vintage Invisible Pulse Beam Infrared Photorelay Alarm
$34.95
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About this item
Typically designed to cover distances up to 50 feet between the transmitter/receiver and the reflector. Pulsed Beam Technology But what a cool novelty discussion item! You won't find a USB port in this guy!
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