7:REGULATORY AND WARRANTY INFORMATION

110/120 V models

This equipment has been tested and found to comply with the limits for a Class A digital device, pur- suant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his/her own expense.

Shielded signal cables must be used with this product to ensure compliance with the Class A FCC limits.

230 V models

This is a Class A product. In a domestic environment this product may cause radio interference, in which case the user may be required to take corrective actions.

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American Power Conversion 420/520 VA user manual Regulatory and Warranty Information, 110/120 V models, Models