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Smw PC817 2/4 Channel Optocoupler Optoisolator Photocoupler Module – For Arduino
About this item
Isolate your signals.
This smw module uses PC817 optocouplers—available in 2-channel or 4-channel versions.
Protects your Arduino or microcontroller from voltage spikes, ground loops, and noise.
Great for industrial controls, relay driving, sensor interfacing.
New, no MPN listed.
Brand smw, core Arduino-compatible.
Small board, big protection.
If you're tinkering with 5V logic and want to keep the magic smoke inside, this is the part.
USD$ 2.46 
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4 out of 5 stars
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