NEMA 5-20RPC Series Remote Power Control uses classic style connections, and is ready to combine with a variety of switches or sequential control devices that provide a dry contact closure or voltage output (5V-24V, AC or DC, 3mA) for an intrinsically safe low voltage method of controlling AC power to equipment at a remote location. Model RPC-20-SCD includes 2-20A outlets and basic surge suppression. This unit requires an external trigger for activation.