11Safety and warranty guideLithium battery noticeCautionDanger of explosion if battery is incorrectly replaced.When replacing the lithium coin cell battery, use only the same or an equivalenttype that is recommended by the manufacturer. The battery contains lithium andcan explode if not properly used, handled, or disposed of.Do not:• Throw or immerse into water• Heat to more than 100°C (212°F)• Repair or disassembleDispose of the battery as required by local ordinances or regulations.The following statement applies to users in the state of California, U.S.A.Perchlorate material: Special handling may apply. See www.dtsc.ca.gov/hazardouswaste/perchlorate.Modem safety informationCautionTo reduce the risk of fire, use only No. 26 AWG or largertelecommunication line cord.To reduce the risk of fire, electrical shock, or injury when using telephoneequipment, always follow basic safety precautions, such as:• Never install telephone wiring during a lightning storm.• Never install telephone jacks in wet locations unless the jack is specificallydesigned for wet locations.• Never touch uninsulated telephone wires or terminals unless the telephone linehas been disconnected at the network interface.• Use caution when installing or modifying telephone lines.• Avoid using a telephone (other than a cordless type) during an electrical storm.There may be a remote risk of electric shock from lightning.• Do not use the telephone to report a gas leak in the vicinity of the leak.