1, 2, 4, 8 channel 5V relay


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So you've been working with Arduinos to blink LEDs and monitor analog values but you wanna get bigger. Relays are a great way to get way to branch out of your small hobby projects. With these you can interface with your home, turn on lights when you clap your hands. Monitor your 3D printer when you're away, or start your coffee machine at a scheduled time. 


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