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Safety
quality that’s acceptable for normal
operation.
The M mark is intended to be synonymous
with the U mark. The T mark is intended to
be synonymous with the UT mark. The M
and T marks are recommended by the
Alliance for Telecommunications Industries
Solutions (ATIS). The U and UT marks are
referenced in Section 20.19 of the FCC
Rules. The HAC rating and measurement
procedure are described in the American
National Standards Institute (ANSI)
C63.19 standard.
When you're talking over the cell phone,
it's recommended you'd turn the BT (
Bluetooth
®
) mode off for HAC.