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such as near gas pumps at service stations. Observe restrictions 
on the use of radio equipment in fuel depots, 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. They include below deck on 
boats, chemical transfer or storage facilities and areas where the 
air contains chemicals or particles such as grain, dust, or metal 
powders. You should check with the manufacturers of vehicles 
using liquefied petroleum gas (such as propane or butane) to 
determine if this device can be safely used in their vicinity.
■ Emergency calls
Important: This device operates using radio signals, 
wireless networks, landline networks, and user-
programmed functions. if your device supports voice 
calls over the internet (internet calls), activate both the 
internet calls and the cellular phone. The device will 
attempt to make emergency calls over both the cellular 
networks and through your internet call provider if both 
are activated. Connections in all conditions cannot be 
guaranteed. You should never rely solely on any 
wireless device for essential communications like 
medical emergencies.