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5V/12V/24V 8 Channel Optocoupler Relay Module Board with High/Low and Trigger Power Indicator Light(24V): Amazon.com: Industrial & Scientific
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NOYITO 6-Channel Relay Module 5V 12V 24V High Low Level Trigger with Optocoupler Isolation Relay Load AC 250V 10A DC 30V 10A (DC 5V, Blue): Amazon.com: Industrial & Scientific
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