Karma KP-10.3, Owner'S Manual

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3.4 Warnings
3.4.1 Electromagnetic interference (EMI) from sources such as radio and TV
stations, amateur radio (HAM) transmitters, two-way radios and cellular
phones can affect powered vehicles and motorized wheelchairs.
3.4.2 Following the warnings listed below should reduce the chance of
unintended brake release or powered vehicle movementwhich could
result in serious injury.
3.4.2.1 Do not operate hand-held transceivers-receivers such as citizens band
(CB) radios or turn ON personal communication devices such as cellular
phones, while the powered vehicle is turned ON.
3.4.1.2 Be aware of nearby transmitters, such as radio or TV stations, and try to
stay away from them.
3.4.1.3 If unintended movement or brake release occurs, turn the powered
vehicle OFF as soon as it is safe.
WARNING
●Some stores may have automatic (sensor) doors and alarm systems set at
certain frequencies that might affect your powered wheelchair.
3.4.3 Be aware that adding accessories/components or modifying the powered
vehicle may make it more susceptible to EMI. There is no easy way to
evaluate their effect on the overall immunity of the powered vehicle.
3.4.4 Report all incidents of unintended movement or brake release to your
powered vehicle dealer or KARMA, and note whether there was a source
of EMI nearby.