SPDU can meet the sequential power on/ off function through the setup of sequential power on/off or time delay by customer.

SPDU can avoid in-rushes at start-up and turn-off, which can cause overload circuit and dropped loads, the instantaneous power resulting from the current shock protection device malfunction, and the interference between the network equipment of pollution to meet and satisfy the technology requirement of sequential power on/off of the operating equipment and the system operating proceeding.