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Control more appliances with your Arduino board using this relay shield! This shield has four mechan..
Have you ever thought of making sunlight-controlled light bulbs? It sounds redundant, but it can aut..
This solid-state relay functions as the same with the mechanical relay, but the difference is the me..
Your 5V system can wield great power with this big, beefy relay board. How does 10A on the NC contac..