UPS system incl. 1 battery string 9 Ah, scalable up to 4 Parallel switching of up to 4 systems (3+1) Touchscreen colour display Internal, automatic bypass SNMP interface (Ethernet), ModBus, relay contacts (4 x input, 4 x output) Runtime (20 kW load): approx. 4 min Runtime (10 kW load): approx. 11 min When used at full 20 kW power capacity, at least one additional battery module should be ordered. Incl. start-up service (check of all cabling, commissioning of UPS as well as function test) The UPS must be installed by a qualified electrician. Please note the recommended breakers and wire gauges! Please note that increased delivery costs may apply due to product weight