6
Avoid fire and explosion
Do not use the instrument in an explosive environment.
Do not operate
the cellular device in the presence of flammable gases or fumes. Switch off
the cellular device when you are near petrol stations, fuel depots, chemical
plants or where blasting operations are in progress. Operation of any
electrical equipment in potentially explosive atmospheres can constitute a
safety hazard.
Interference
Your cellular device receives and transmits radio frequency energy
while switched on.
Remember that interference can occur if it is used close
to TV sets, radios, computers or inadequately shielded equipment. Always
switch off the cellular device wherever forbidden, or when you suspect that it
may cause interference or danger.
Service availability
Devices operate using radio signals and cellular networks. Because of
this, connection (SMS, GPRS, etc.) cannot be guaranteed at all times
under all conditions.
Therefore, you should never rely solely upon any
wireless device for essential communications (emergency systems, safety-
related systems). Remember, for hi-reliability systems is redundancy
necessary. For more information please see IEC 61508.
