Areas where prohibited by law: Follow any special rules and regulations and obey all signs and notices. Always ensure that the unit is turned off (the power switch is not lit) when instructed to do so or whenever it may cause interference or danger.

Where explosive atmospheres may be present: Do not operate the units in any area where a potentially explosive atmosphere may exist. Sparks in such areas could cause an explosion or fire, resulting in bodily injury or even death. Be aware and comply with all signs and instructions.

It is not advisable to operate the units while at a refueling point or service station: Users are reminded to observe restrictions on the use of radio equipment in fuel depots (fuel storage and distribution areas), chemical plants or where blasting operations are in progress.

Areas with a potentially explosive atmosphere are often, but not always, clearly marked: Potential locations can include gas stations, below deck on boats, chemical transfer or storage facilities, vehicles using liquefied petroleum gas (such as propane or butane), areas where the air contains chemicals or particles (such as grain, dust or metal powders), and any other area where it would normally be advisable to turn off a vehicle’s engine.

Near medical and life support equipment: Do not operate the units in any area where medical equipment or life support equipment is in use, or near any equipment that may be susceptible to any form of radio interference. As the unit may transmit signals that could interfere with this equipment, the host communications device must be turned off in such areas.