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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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ZYAMY 2 Channel 12V Red Board Relay Module with Optocoupler Isolation Supports High and Low Level Trigger for SCM Household Appliance Control: Amazon.com: Industrial & Scientific
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Amazon.com: WMYCONGCONG 5 PCS 12V 2 Channel Relay Module with Optocoupler Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics
Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific
Amazon.com: Solid State Relay Module, 1 Channel DC 5V/12V 2A SSR Module Board with Fuse Low Level Trigger(5V) : Industrial & Scientific
5V/12V/24V 8 Channel Optocoupler Relay Module Board with High/Low and Trigger Power Indicator Light(24V): Amazon.com: Industrial & Scientific
Amazon.com: HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino : Industrial & Scientific
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Relay Module with Optocoupler 1 Channel High&Low Level Trigger Relay Module Board AC 250V/10A DC 30V/10A (5V): Amazon.com: Industrial & Scientific
Amazon.com: Acxico 1Pcs 3-32V DC 1-Channel SSR Solid State Relay High-Low Trigger 5A 5V 12V for Arduino : Industrial & Scientific
5V DC Delay Relay Delay with Timer Turn on/Delay Turn Off Switch Module (5V) - - Amazon.com
Amazon.com: HiLetgo 5V 1 Channel Self Locking Bistable One Button Start/Stop Self-Locking Relay Module Relay Switch for MCU Control : Industrial & Scientific
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Amazon.com: DZS Elec 8 Channel 5V Relay Module Driver Module with Indicator Light ( No Optical Coupler ) SCM Control Board for Raspberry Pi/DSP/AVR/51/PIC/ARM Black Board : Electronics
Amazon.com: DAOKI 5 PCS 5v Relay Module for Arduino ARM PIC AVR MCU 5V Indicator Light LED 1 Channel Relay Module Works with Official Arduino Boards : Industrial & Scientific