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Handson Technology
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Buy 5V 1 channel relay module compatible with 5V microcontroller
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5V 1/2/4/6/8 Channel Relay Board Module Optocoupler LED for Arduino PiC ARM AVR | eBay
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Elegoo 4 Channel DC 5V Relay Module with Optocoupler for Arduino UNO R3 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Amazon.de: DIY & Tools
Handson Technology
Relay Module 5V DC 4 Channel
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4 Kanal Relais 5V/230V Raspberry Pi Optokoppler Modul Channel Relay Arduino – MAKERSHOP.DE
