2Pcs PC817 8 Channel Optocoupler Isolation Board 3.6-30V Driver Photoelectric Isolated Module Voltage Converter Adapter Module
ALLECIN SN74HC595N 8-Bit Shift Registers with 3-State Output Registers DIP-16 SN74HC595 74HC595 Shift Register (Pack of 30pcs)
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Shutao2Pcs PC817 8 Channel Optocoupler Isolation Board 3.6-30V Driver Photoelectric Isolated Module Voltage Converter Adapter Module
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