Getting Started
Read all the information in this section before you use your handset.
Handset information
Ensure that the adapter voltage is the same as the electrical outlet voltage. The 7420 handset uses radio signals and does not guarantee a connection in all circumstances. Do not rely on a cordless handset to make emer- gency calls.
Never use your handset:
•in the vicinity of electrical detonators
•in shielded rooms
•in areas where radio transmission is forbidden
•in aircraft
Do not place a handset near:
•water, moisture or damp areas
•heat sources, direct sunlight or unventilated areas
•devices which generate strong magnetic fields such as electrical appliances, fluorescent lamps, computers, radios, televisions or fax machines
•areas where the handset can be covered, its ventilation impaired, liquid spilled on the unit or objects inserted into the handset through any openings.
•areas with dust, vibration, shock or temperature extremes
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