Check for small metal objects in the handset earpiece/mouthpiece before using the handset.
Do not store or locate flammable liq- uids, gases, or explosive materials in the same compartment or vicinity as the cordless handset, its parts or accessories.
To protect the handset against drops, we recommend to carry the handset in a protective cover (A0553739 or A0553740)
Battery information
Read the following information before you handle the batteries:
•Do not replace the batteries in potentially explosive environments, such as rooms where flammable liquids or gases are present.
•The battery will explode if disposed of in a fire.
•Do not charge the batteries unless you use the Nortel Networks approved charger and the proper batteries.
•Only use battery type NT7B65LD in the 7420 handset. Do not use these batteries with other products. These batteries were designed specifically for use with the 7420 handset and the 7420 charger ONLY. Improper use of the batteries may result in fire hazard.
•Do not do anything that would cause the battery to short circuit.
•Do not let the battery or the charger come into contact with conductive metal objects.
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