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ST-1

SAFETY INFORMATION ON

ELECTROMAGNETIC INTERFERENCE (EMI)

CAUTION : It is very important that you read this information regarding the possible

effects of Electromagnetic Interference on your motorized scooter.

Powered wheelchairs and motorized scooters may be susceptible to electromagnetic

interference (EMI), which is interfering electromagnetic energy (EM) emitted from sources

such a radio stations, TV stations, amateur radio (HAM) transmitters, two-way radios,

and cellular phones. The interference (from radio wave sources) can cause the motorized

scooter to release its brakes, move by itself, or move in unintended directions. It can also

permanently damage the motorized scooter control system. The intensity of the interfering

EM energy can be measured in volts per meter (V/m). Each motorized scooter can resist

EMI up to certain intensity. This is called its "immunity level." The higher the immunity

level, the greater the protection. At this time, current technology is capable of achieving

at least a 20 V/m immunity level, which would provide useful protection from the more

common sources of radiated EMI. This immunity level of this motorized scooter model

is 20 V/m.

There are a number of sources of relatively intense electromagnetic fields in the everyday

environment. Some of these sources are obvious and easy to avoid. Others are not apparent

and exposure is unavoidable. However, we believe that by following the warnings listed

below, your risk to EMI will be minimized.

The sources of radiated EMI can be broadly classified into three types :

1.Hand-held portable transceivers (transmitters-receivers) with the antenna mounted

directly on the transmitting unit. Examples include: citizens band (CB) radios, "walkie

talkie," security, fire, and police transceivers, cellular telephones, and other personal

communication devices;

Some cellular telephones and similar devices transmit signals while they

are ON, even when not being used.

2.Medium-range mobile transceivers, such as those used in police cars, fire trucks,

ambulances, and taxis. These usually have the antenna mounted on the outside of the

vehicle; and

3.Long-range transmitters and transceivers such as commercial broadcast transmitters

(radio and TV broadcast antenna towers) and amateur (HAM) radios.

Other types of hand-held devices, such as cordless phones, laptop

computers, AM/FM radios, TV sets, CD players, and cassette players,

and small appliances, such as electric shavers and hair dryers, so far

as we know, are not likely to cause EMI problems to your motorized

scooter.

Issue 1

02/04/2010

Instruction Booklet