Nokia 12 GSM MODULE REMOTE I/O - Manual (Page 51)

you can utilize Network Services. Your service provider may need to give you
additional instructions for their use and explain what charges will apply. Some
networks may have limitations that affect how you can use Network Services.
This device operates using radio signals, wireless networks, landline networks,
and user-programmed functions. Because of this, connections in all conditions
cannot be guaranteed. You should never rely solely on any wireless device for
essential communications.
10.2 ANTENNA
This device requires a separate antenna. If the antenna is to be mounted
outside, consider the risk of lightning. Follow the instructions provided by the
antenna manufacturer. Never connect more than one device to a single
antenna. The device can be damaged by radio frequency energy from the
transmitter of another module.
Like any mobile station, the antenna of the device emits radio frequency
energy. To avoid EMI (electromagnetic interference), you must determine
whether the application itself, or equipment in the application’s proximity, need
further protection against radio emission and the disturbances it might cause.
In any event, you should contact your local antenna manufacturer for additional
information concerning antenna types, cables, connectors, antenna placement,
and the surrounding area. You should also determine whether the antenna
needs to be grounded or not. Your local antenna manufacturer might be able to
design a special antenna suitable for the application.
In order to comply with RF exposure guidelines, install the external antenna so
that a minimum distance of 20 cm (8 inches) can be maintained between the
external antenna and all persons, with external antenna gain not exceeding 3
dBi. Note that you may be required to provide SAR measurement test report
and declaration.
10.3 MEDICAL DEVICES
Operation of any radio transmitting equipment, including this device, may
interfere with the functionality of inadequately protected medical devices.
Hospitals or health care facilities may be using equipment that could be
sensitive to external RF energy.
10.4 VEHICLES
RF signals may affect improperly installed or inadequately shielded electronic
systems in motor vehicles such as electronic fuel injection systems, electronic
antiskid (antilock) braking systems, electronic speed control systems, air bag
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