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HiLetgo 2pcs DC 24V 1 Channel Relay Module with OPTO Isolation Support High or Low Level Trigger
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HiLetgo 2pcs DC 24V 1 Channel Relay Module with OPTO Isolation Support High or Low Level Trigger
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NOYITO 8-Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control Industrial Control (8 Channel 12V): Amazon.com: Industrial & Scientific
