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DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
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Finder 0-250V 5A, DPDT Plug-in Power Relay with 12v DC Coil: Amazon.com: Industrial & Scientific
uxcell DC 12V Relay Module 1 Channel Low Lever Trigger for UNO R3 DSP ARM PIC AVR STM32 - - Amazon.com
Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics
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