POWER Castle Series Online HF UPS 6KVA, 120Vdc 1.DSP control ,with excellent performance and comprehensive protections 2. Less battery quantity,only 10pcs*12Vdc, battery cost effective 3.Intelligent fan speed control ,with 4 levels varying according to load and temperature 4.Wide input range ,support kinds of generator 5.Dual input AC source supportable 6. EPO(emergency power off) 7.Event log up to 100 events, recording UPS running time and critical memories 8. Intelligent N