A simpler-specification sibling of APC's Smart-UPS RT 20kVA rack-mount line — the listing here is brief (just capacity and voltage), so it isn't clear whether this exact unit ships with a network management card or extended-battery support pre-fitted, unlike the SURT20KRMXLi variant elsewhere in this catalog. It's a rack-mount unit rated for 230V. Like all Smart-UPS RT models, it uses double-conversion online technology, delivering continuous, regulated output rather than switching to backup only when mains fails. Suited to protecting server racks, network equipment and other mission-critical IT infrastructure in an office or data centre, particularly in a market like South Africa where load shedding makes a genuine online UPS the sensible choice over a cheaper standby unit.