77Useful Information• Environment — do not place the unit in a room where the temperature is lessthan 5°C (41°F) or greater than 40°C (104°F). Allow 10 cm (4") clearancearound the unit for proper ventilation. Avoid excessive smoke, dust, mechanicalvibration, shock, or direct sunlight.• Medical — consult the manufacturer of any personal medical devices, such aspacemakers, to determine if they are adequately shielded from external RF (radiofrequency) energy. (The unit operates in the frequency range of 2401MHz to2481MHz, and the power output level can range from 0.001 watts to 0.40 watts.)Do not use the unit in health care facilities if any regulations posted in the areainstruct you not to do so. Hospitals or health care facilities may be usingequipment that could be sensitive to external RF (radio frequency) energy.• Routine care — wipe the unit with a soft cloth. Do not use benzine, thinner, orany abrasive powder. When you leave the unit unused for a long period of time,unplug the AC adaptor from the outlet.• If there is any trouble — disconnect the unit from the telephone line and connecta known working phone. If the known working phone operates properly, have yourunit repaired by one of the authorized Panasonic Factory Service Centers. If theknown working phone does not operate properly, consult your telephone company.Note:This equipment has been tested and found to comply with the limits for a Class Bdigital device, pursuant to Part 15 of the FCC Rules. These limits are designed toprovide reasonable protection against harmful interference in a residentialinstallation. This equipment generates, uses, and can radiate radio frequencyenergy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If thisequipment does cause harmful interference to radio or television reception, whichcan be determined by turning the equipment off and on, the user is encouraged totry to correct the interference by one or more of the following measures:—Reorient or relocate the receiving antenna.—Increase the separation between the equipment and receiver.—Connect the equipment into an outlet on a circuit different from that to which thereceiver is connected.—Consult the dealer or an experienced radio/TV technician for help.Some cordless telephones operate at frequencies that may cause interference tonearby TVs and VCRs. To minimize or prevent such interference, the base of thecordless telephone should not be placed near or on top of a TV or VCR. Ifinterference is experienced, move the cordless telephone further away from theTV or VCR. This will often reduce, or eliminate, interference.Operating near 2.4GHz electrical appliances may cause interference. Move awayfrom the electrical appliances.CAUTION:To comply with FCC RF exposure requirements, the base unit should be installedwith its antenna located at 20 cm or more from persons and handset should becarried with the specific belt-clip provided for the handset to ensure compliance.Other non-tested belt-clips or similar body-worn accessories may not comply,therefore, should be avoided.