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5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz - Yahoo Shopping
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Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific
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NPN/PNP to NPN Squarewave Signal Conversion Module, Level Voltage Converter Module, for Level Conversion Single Chip Microcomputer Signal Isolation: Amazon.com: Industrial & Scientific
Amazon.com: 1pc 8-Channel 10MHZ NPN/PNP to NPN 5V/24V SquareWave Signal Conversion Module Level Converter : Electronics
