Vertiv Cyclades ACS4 48 VDC, Black Vertiv Cyclades ACS4 48 VDC. Product color: Black, Certification: FCC Part 15 Class A, EN55022, Class A (CE), EN55024, NEBS Level 3†, UL/cUL, TUV/GS, Japan VCCI.... Connectivity technology: Wireless, Power supply type: Dual, Compatible operating systems: Linux