82systems, electronic speed control systems, and air bag systems.For more information, check with the manufacturer, or itsrepresentative, of your vehicle or any equipment that has beenadded. Only qualified personnel should service the device, orinstall the device in a vehicle. Faulty installation or service maybe dangerous and may invalidate any warranty that may applyto the device. Check regularly that all wireless equipment inyour vehicle is mounted and operating properly. Do not storeor carry flammable liquids, gases, or explosive materials in thesame compartment as the device, its parts, or enhancements.For vehicles equipped with an air bag, remember that air bagsinflate with great force. Do not place objects, includinginstalled or portable wireless equipment in the area over theair bag or in the air bag deployment area. If in-vehicle wirelessequipment is improperly installed, and the air bag inflates,serious injury could result. Using your device while flying inaircraft is prohibited. Switch off your device before boardingan aircraft. The use of wireless teledevices in an aircraft may bedangerous to the operation of the aircraft, disrupt the wirelesstelephone network, and may be illegal.Potentially explosive environmentsSwitch off your device when in any area with a potentiallyexplosive atmosphere and obey all signs and instructions.Potentially explosive atmospheres include areas where youwould normally be advised to turn off your vehicle engine.Sparks in such areas could cause an explosion or fire resultingin bodily injury or even death. Switch off the device atrefueling points such as near gas pumps at service stations.Observe restrictions on the use of radio equipment in fueldepots, storage, and distribution areas; chemical plants; orwhere blasting operations are in progress. Areas with apotentially explosive atmospheres are often, but not always,clearly marked. They include below deck on boats, chemicaltransfer or storage facilities, vehicles using liquefied petroleum