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Hiletgo 12V 8 Channel Relay Module With OPTO-Isolated High And Low Level Trigger 8 Ways Relay Switch Module For Arduino

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Optocoupler Isolated GPIO Relay Module, 4 Channel, Dual Mode High And Low Level Trigger, 3-24V High Or 0-1.5V Low, 5-32V Power Supply, ABS DIN Rail Mo

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Two Pack 5V Relay Module 30A One Channel With Optocoupler Isolation And High And Low Trigger Built For 5V 12V 24V Power Easy Terminal Connectors Your

Geekstory 5PCS 2 Channel 5V Relay Module 10A With Optocoupler Low Level Trigger Expansion Board For Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR DSP