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$19.83
MCU, Relay Module YYG 4 High Power 4 Channel Relay Module Relay Module Control Board Optocoupler Isolation 30A DC 12V, Relays (5VDC)
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4-Channel Relay Driver Circuit and PCB Design
4-Channel Relay Driver Circuit and PCB Design
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ELEGOO DC 5V Relay Module Datasheet
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Shop 4 Channel Relay Module and 12V DC Power

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$19.83
MCU, Relay Module YYG 4 High Power 4 Channel Relay Module Relay Module Control Board Optocoupler Isolation 30A DC 12V, Relays (5VDC)
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Hiletgo 4 Channel 24V Relay Module With OPTO-Isolated Support High And Low Level Trigger For PLC Automation Equipment Control
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