36
Cardiac pacemakers (applies only to digital cordless telephones):
Wireless Technology Research, LLC (WTR), an independent research entity, led a multidisciplinary
evaluation of the interference between portable wireless telephones and implanted cardiac pacemakers.
Supported by the U.S. Food and Drug Administration, WTR recommends to physicians that:
Pacemaker patients
Should keep the wireless telephone at least six inches from the pacemaker.
Should NOT place wireless telephones directly over the pacemaker, such as in a breast pocket, when it
is turned ON.
Should use the wireless telephone at the ear opposite the pacemaker.
WTR’s evaluation did not identify any risk to bystanders with pacemakers from other persons using
wireless telephones.
Operating range
This conference phone operates with the maximum power allowed by the Federal Communications
Commission (FCC). Even so, this wireless microphone unit and base unit can communicate over a certain
distance, which can vary with the locations of the base unit and wireless microphone unit, the weather, and
the layout of your office.
When the wireless microphone unit is out of range, the status indicator flashes red quickly on the wireless
microphone unit. The wireless microphone unit will sleep after out of range for 30 minutes. Therefore, you
should always return the wireless microphone unit to the charging cradle after use.
If there is an incoming call while the wireless microphone unit is out of range, the incoming call green light
may not flash on the wireless microphone unit, or if it flashes, the call may not connect well when you
press
on the base unit. Move the wireless microphone unit closer to the base unit, and then press
on the base unit to answer the call. If the wireless microphone unit moves out of range during a telephone
conversation, there may be interference. To improve reception, move closer to the base unit.
•
•
•
Precautions for users of implanted cardiac pacemakers
