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6-channel 5V Relay Module Board Optocoupler Relay for Arduino, Raspberry Pi, pcDuino, among others - Arcade-Expert, Your Retro Arcade Gaming Store
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Amazon.com: Optocoupler-Isolated 2 Channel DC 5V Relay Module for Arduino Raspberry Pi MEGA 2560 DSP AVR PIC ARM MCU STM32, Electronic Experiment, Smart Home, Industrial Control, Robot : Electronics
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