Sony GB-A Series Instruction Manual page 2

[For the customers in U. S. A.]
WARNING
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.
You are cautioned that any changes or modifications
not expressly approved in this manual could void your
authority to operate this equipment.