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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
4 Channel Isolated 5V 10A Relay Module opto coupler For Arduino PIC AVR DSP ARM SOLDRON SPONGE SQUARE SSS Premium Industrial Grade Electronics from The Premium Industrial Grade Electronics from The Engineer Store Ergonomic 4 Channel Transmitter: Comfortable Heat Dissipation: Proper relay spacing prevents thermal issues Remote device switching
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