User's Manual

Radio
Specifications
The AutoAlert
Help
Button has a radiofrequency
transmitter with
the
following characteristics:
maximum
power over
an antenna load:
12
clBm,
frequency:
319.5 MHz ± 75
KHz, modulation: 00K.
It
fully
complies
with
FCC Part
15, Section 15.231
for periodic operation
above 70
MHz.
Electromagnetic
Immunity
The
AutoAlert Help
Button is intended
for
use in an
electromagnetic
environment
in which
RF disturbances are
controlled.
The user of the
AutoAlert
Help
Button
can help prevent
electromagnetic
interference
by maintaining
a minimum distance
between portable
and RF
communications
equipment (transmitters)
and the AutoAlert
Help
Button,
as
recommended
below,
according to the maximum
output
power
of the
communications
equipment.
Rated maximum
Separation
distance according
to frequency
output
power of
of
the transmitter
the transmitter
150 KHz
80 MHz
800 MHz
to
80
MHz to 800
MHz
to 2.5 GHz
0.01 W
4.6’
(12 cm)
4.6” (12
cm)
9.2’
(23 cm)
0.1 W
14.5” (37
cm) 14.5” (37
cm)
20”
(74 cm)
1 ‘N
3ft 10” (1.17 m) 3ft
10”
(1.17
m) 7ft 8” (233 m)
10 ‘N
l2ft 1” (3.7
m) l2ft 1” (3.7
m) 24ft 2”
(7.4
m)
100
W 38ft
4” (12
m)
38ft 4” (12 m)
76ft 8” (23.3 m)
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