Power Shield offers two ranges of Power Distribution Units (PDUs). Our PDUs are highly reliable, multiple outlet power strip designed to deliver conditioned power to mission-critical networking, server or telecom equipment often used in conjunction with an uninterruptible power supply (UPS). In a networking environment, devices need to be powered continuously, either from a whole site generator or rack mounted UPS power source, and since many networking devices in use today are fitted with dual redundant power inputs, with many requiring two power sources to further mitigate the risk of power failure.