SolaHD™ internal battery industrial on-line UPS. cULus, federal communications commission. True double conversion topology. User replaceable, hot-swappable internal battery module. Higher power factor of 0.8 (6 kVA) and 0.9 (10 kVA). Automatic frequency detection (60 or 50 Hz). Both models offer 208/120 V or 240/120 V. Configurable as a tower or rack mounting. Easily installed in 18 inch to 32 inch deep rack using rack mount kit # SRS1832. Highest density, 6 kVA in only 4U and 10 kVA in only 6U of rack space. Includes both automatic and manual maintenance bypass switch. Self-diagnostics simplify maintenance and troubleshooting. Remote emergency Power Off (REPO).