Multitech CC4800 Hardware Manual page 6

NOTE: This equipment has been tested and found to comply with the limits for
a Class A digital device, pursuant 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 own expense.
WARNING: Changes or modifications to this unit not expressly approved by
the party responsible for compliance could void the user's authority to operate
the equipment.