MAJOR BRANDS4N35 Optocoupler, DC Input 1 Channel Trans with Base DC Output, 100% Transfer Ratio, 6-Pin, PDIP, 1.2V, 4 mm H x 7 mm W x 7.62 mm L (Pack of 20)

Major Brands 4N35 Optocoupler, DC Input 1 Channel Trans with Base DC Output, 100% Transfer Ratio, 6-Pin, PDIP, 1.2V, 4 mm H x 7 mm W x 7.62 mm L (Pack of 20)

BOJACK PC817 OPTOCOUPLER DIP Installation PC817C 2.54 mm Pitch 4-pin DIP-4 (Pack of 50 pcs)

ELEGOO 32 Pcs Double Sided PCB Board Prototype Kit for DIY Soldering with 5 Sizes Compatible with Arduino Kits