APC Easy UPS 3S 20kVA LowTower, 400V

Highly efficient, three-phase UPS with modern functions, excellent specs and durable electrical equipment, designed for operation with optional, external battery systems, serial RS232, RS485 and USB interfaces, dry contacts, SNMP network card for simple monitoring and administration on Windows available separately. Please note: Important: the UPS must be connected by a professional! Batteries not included! Optional monitoring and administration of the UPS only possible on Windows!