This is an APC Smart-UPS SRT, a double-conversion online UPS rated at 10,000VA, in rack-mount (RM) form for a 230V supply — the SRT line is APC's higher-end range built for continuous, always-on protection of servers and networking equipment in data centres and server rooms, where even brief power transfer gaps aren't acceptable. Double-conversion online design means it constantly runs load through its inverter rather than switching to battery on outage, giving cleaner, more consistent power and effectively zero transfer time, which particularly matters given South African grid instability and load-shedding. At 10kVA, it's sized for a meaningful rack of equipment, and being rack-mount, it's intended for a proper server rack installation rather than freestanding office use.