A d d i t i o n a l s a f e t y i n f o r m a t i o n75Switch off the device at refuelling points such as near gas pumps atservice stations. Observe restrictions on the use of radio equipmentin fuel depots, storage, and distribution areas; chemical plants; orwhere blasting operations are in progress. Areas with a potentiallyexplosive atmosphere are often, but not always, clearly marked. Theyinclude below deck on boats, chemical transfer or storage facilitiesand areas where the air contains chemicals or particles such asgrain, dust, or metal powders. You should check with themanufacturers of vehicles using liquefied petroleum gas (such aspropane or butane) to determine if this device can be safely used intheir vicinity.■ Emergency callsImportant: This device operates using radio signals,wireless networks, landline networks, and user-programmed functions. If your device supports voice callsover the internet (internet calls), activate both the internetcalls and the cellular phone. The device will attempt tomake emergency calls over both the cellular networks andthrough your internet call provider if both are activated.Connections in all conditions cannot be guaranteed. Youshould never rely solely on any wireless device for essentialcommunications like medical emergencies.