This is a genuinely enterprise/datacentre-grade UPS design, built for protecting servers, network equipment and other critical infrastructure where even a few milliseconds of power interruption during a transfer-switch UPS's changeover could cause a reboot or data loss. It's rated for 200-240V input, matching standard three-phase-derived or single-phase mains voltage used in server rooms and comms cabinets outside North America. The 9PX range includes a front-panel LCD display for monitoring load, battery status and runtime estimates, and typically supports hot-swappable battery modules and optional network management cards for remote monitoring and automated graceful shutdown of connected servers — features expected at this UPS tier, distinguishing it clearly from consumer-grade line-interactive UPS units sold for home PCs.