Identification/ Locations / Exposure
22
Section - 7
Exposure to Radio Frequency Energy
The handheld remote control and base units contain radio transceivers. When active, handheld remotes and
base units send out radio frequency (RF) energy through either internal (remote/base unit) or external (base
unit only) antennae. The handheld remote and base units comply with limits set by the United States Federal
Communications Commission (FCC) for operating distance from human tissue.
RF Exposure Considerations
The radio module may be used in a variety of host applications falling into two general categories:
1. Mobile applications: Any operating locations where the transmitting equipment is not on a human body. In
mobile applications, the host application is typically fixed to mobile equipment, with either an internal or
external antenna.
2. Portable applications: Any operating locations where the transmitting equipment is located on the hand,
arm, or other part of the human body. In portable applications, the equipment is either held in the hands of
an operator or affixed to either a belt or harness on the torso.
Equipment containing the radio module was evaluated for RF exposure hazards by two approaches:
1. Maximum Permissible Exposure (MPE) for mobile applications.
2.
Specific Absorption Rate (SAR) for portable applications.
Required separation distances are measured from the actual location of the radiating part of the antenna. An
antenna may be inside the host application, affixed to the host application enclosure, or at the end of an optional
extension coaxial cable.
Mobile Applications
Equipment
must
be located at least 8” (
20 cm)
away from areas likely to be occupied by an unaware person.
Transmitter Applications
All operators of transmitter equipment with any type of antenna require proper equipment operation training, and
such training must include RF exposure safety instructions. They are then considered to be “aware” persons
once training is completed.
If the portable operating position is on the hand or arm, a 1” (
5 mm)
separation is required between the radiating
part of the antenna and nearby human tissue.
Required Training
All installers and operators of host applications that include an SRF305 FT module must be trained to use proper
RF safety precautions as presented in this Appendix.
06/15/2022
SII Telescopic Proportional Electric Crane Radio Remote
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