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Amazon.com: IS Voltage Level Translator, Icstation 4 Channel Voltage Level Converter Opto Isolator Board PNP NPN PLC Signal Converter Module 12V to 3.3V : Industrial & Scientific
12V to 3.3V 2-Channel Optocoupler Isolator Photoelectric Isolation Module Level Voltage Converter 2Bit NPN Output PLC Signal Converter
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