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Serial port USB to IRDA infrared high-speed transmission | without self-receiving | optical isolation transmission filePC-UHGS-C - AliExpress
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MSA 10082834 IrDA Infrared USB Dongle Adapter for ALTAIR and Sirius PID Multi-Gas Detectors, Enables Connection to MSA Link Software, Portable Gas Monitor Accessory: Science Lab Gas Handling Instruments: Amazon.com: Tools &
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