Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM - for
EQUIPMENT and SYSTEMS that are not LIFE-SUPPORTING
Recommended separation distances between portable and mobile RF communications equipment
and the Project E Beauty LED Light Therapy Mask
The Project E Beauty LED Light Therapy Mask is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the Project E Beauty LED Light
Therapy Mask can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the Project E Beauty
LED Light Therapy Mask as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter
(W)
0.01
0.1
1
10
100
For transmitters with a maximum output power rating not listed above, the recommended separation
distance d in meters (m) can be determined by using the equation applicable to the frequency of the
transmitter where P is the maximum output power rating of the transmitter in watts (W) according to the
transmitter manufacturer list.
Note 1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note 2: These guidelines may not apply in all situations. Electromagnetic propagation is a ected by
absorption and re ection from structures, objects and people.
Separation distance according to frequency of transmitter (m)
150 KHz to 80 MHz
d
=
1
2 .
P
0.12
0.38
1.2
3.8
12
80 MHz to 800 MHz
d
=
1
2 .
P
0.12
0.38
1.2
3.8
12
800 MHz to 2.7 GHz
d
=
2
3 .
P
0.23
0.73
2.3
7.3
23
23
