HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V
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2-Channel 12V Relay Module Optocoupler High and Low Level Trigger for Arduino | eBay
Relays Board, 4 Channel DC 12V Relay Module Durable For Motor - Walmart.com
8-channel 12V USB Relay Module | SainSmart – SainSmart.com
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