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Radio frequencies used by the wireless card The accessory wireless card and the optional wireless card (ET-CDWL1
series) operate on electronic frequencies within the 2.4 GHz band. You do
not need a radio licence in order to use a wireless card, but you should
make sure that you understand the following points before using such
cards.
Do not use the cards near other sources of radio
emissions.
The following devices may use the same frequencies that are used by the
wireless card. If the wireless card is used near such devices, radio
interference may prevent successful communication, or it may result in
slower communication speeds being achieved.
• Industrial, scientific, m edical equipment, etc
• Electric stoves, etc
• Built-in radio devices used fo r identifying moving equipment in industrial
production lines
• Certain low-power radio devices
Keep the wireless card as far away as possible
from devices such as mobile telephones, TVs and
radios when using such devices
Devices such as mobile telephones, TVs and radios use different
frequencies from the wireless card, so that there will be no effect on either
wireless card communication or on reception or transmission for such
devices. However, radio emissions from the wireless card ma y cause video
or audio interference.
Radio emissions from the wireless card will not travel
through steel framework, metal sheets or concrete.
The radio emissions from the wireless card will pass through materials
such as wood and glass (except for glass which is reinforced with metal
fibres), so that communication is possible because the signals can pass
through walls and floors which are made from these materials. However,
the radio emission cannot pass through materials such as steel frames,
metal sheets and concrete, so that communication is not possible because
the signals cannot pass through walls and floors which are made fr om such
materials.