1/2/4/8/16 Channel Relay Module 12V With optocoupler For Arduino PIC AVR DSP ARM

Onboard EL817 optocoupler, strong anti-jamming capability with optical isolation. 16 CH Optocoupler(Blue). onboard EL817 optocoupler with optical isolation anti-jamming capability. 2 CH Optocoupler(Black).

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