R e f e r e n c e i n f o r m a t i o n83Hearing aidsSome digital wireless devices may interfere with some hearing aids. If interferenceoccurs, consult your service provider.VehiclesRF signals may affect improperly installed or inadequately shielded electronicsystems in motor vehicles such as electronic fuel injection systems, electronicantiskid (antilock) braking systems, electronic speed control systems, air bagsystems. For more information, check with the manufacturer or its representativeof your vehicle or any equipment that has been added.Only qualified personnelshould service the device, or install the device in a vehicle. Faulty installation orservice may be dangerous and may invalidate any warranty that may apply to thedevice. Check regularly that all wireless device equipment in your vehicle ismounted and operating properly. Do not store or carry flammable liquids, gases,or explosive materials in the same compartment as the device, its parts, orenhancements. For vehicles equipped with an air bag, remember that an air bagsinflate with great force. Do not place objects, including installed or portablewireless equipment in the area over the air bag or in the air bag deployment area.If in-vehicle wireless equipment is improperly installed and the air bag inflates,serious injury could result.Potentially explosive environmentsSwitch off your device when in any area with a potentially explosive atmosphereand obey all signs and instructions. Potentially explosive atmospheres include areaswhere you would normally be advised to turn off your vehicle engine. Sparks insuch areas could cause an explosion or fire resulting in bodily injury or even death.Switch off the device at refuelling points such as near gas pumps at servicestations. Observe restrictions on the use of radio equipment in fuel depots,storage, and distribution areas, chemical plants or where blasting operations arein progress. Areas with a potentially explosive atmosphere are often but notalways clearly marked. They include below deck on boats, chemical transfer orstorage facilities, vehicles using liquefied petroleum gas (such as propane orbutane), and areas where the air contains chemicals or particles such as grain,dust or metal powders.FCC regulations prohibit using your wireless device whilein the air. The use of wireless telephones in an aircraft may be dangerous to theoperation of the aircraft, disrupt the wireless telephone network, and may beillegal.Failure to observe these instructions may lead to suspension or denial oftelephone services to the offender, legal action, or both.