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Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
SainSmart 5V 2A 4 Channel Solid State Relay Module High Level Trigger Black for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC: Amazon.com: Industrial & Scientific
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Amazon.com: AC100V-250V 30A High Power 2-Channel Relay High Current DC5V High-Low Level Trigger Switch Module for Arduino : Electronics
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 Electronic STM32 Raspberry Pi: Amazon.com: Tools
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Amazon.com: Ardest 5v 1 Channel Relay Module for Arduino ARM PIC AVR MCU DSP Raspberry Pi Relay Expansion Board Shield with Indicator LED : Electronics
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific
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