This read-write integer (0-255) sets outlet21ONdly, the number of seconds the CPI Unity PDU waits before energizing outlet 21 once a power-on-all or startup sequence begins. Staggering this delay keeps outlet 21's device from drawing inrush current at the exact same instant as outlets with shorter delays, which is what prevents a whole-rack power restoration from tripping an upstream breaker. For example, an administrator could set outlet21ONdly to 6 seconds so the equipment on outlet 21 only powers up after earlier outlets in the startup sequence have already stabilized.