Optocoupler
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    PC817 DIP-4 OptoCoupler (EL817)
    0.2A/40V MMBT3904 NPN Switching Transist...
    5pcs 1206 Green SMD LED Light Green (5pc...
    3.3V 1A Voltage Regulator AMS1117-3.3 Fu...
    3A S3M SMB Diode 1N5408 1000V
    5pcs 0805 SMD Resistor 220R 1% (screen ...
    5pcs 0805 SMD Resistor 470R 1% 470E (Scr...