In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one ...

After wiring up each outlet so it can be controlled independently, he set out designing a four port relay board. This was a pretty simple build – four 10 Amp relays and a few terminal blocks.

Thus, the 6.2-mm-wide electromechanical relay helps reduce labor and wiring costs associated with inductive applications. Pluggable bridges are available for parallel coil and contact connections.