Relay Large Current 30A 2 Channel Module
Your 5V system can wield great power with this big, beefy relay board. How does 10A on the NC contacts and 20A on the NO contacts at 250VAC sound? This contains all the parts you need to get your high-power load under control. The heart of the board is a sealed, SPDT 30A Relay. The relay is controlled by 5V logic through a transistor, and an LED tells you when the relay is closed.