High and Low Level Trigger for Arduino Raspberry Pi MEGA 2560 DSP

With its fixed screw hole positions, it's easy to install and ideal for 51/AVR/AVR/ARM and other platforms. When wire jumper and LOW are shorted, it is triggered at LOW level;. Easy to Use: With simple wiring and easy-to-use features, even users with limited technical experience can quickly set up and start using the 4 way relay module shield.

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