Chicago Digital Power UPO22-15 Pro is a 15kVA double conversion online tower ups. Parallelable up to 45kw with redundancy of 15KVA with incorporated power full batteries charger that can be almost unlimited battery back-up to critical loads. Super wide input voltage range and selectable output voltage. Complete Auto diagnostics and advance LCD displays that provide operational information as well as communication for remote monitoring/ control. Advanced high frequency transformer and Isolation transformer reproduces perfect AC while eliminating Spikes/surges, line noise and voltage fluctuations, Compact reliable design that includes certifications from international regulatory agencies such as CE, NOM, TUV, IEEE, Retie.