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Appendix
Precautions for users of implanted cardiac pacemakers
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 wireless telephones 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.
ECO mode
This power conserving technology reduces power consumption for optimal battery performance. The 
ECO mode activates automatically whenever the handset is synchronized with the telephone base. 
Especially about telephone answering systems
Two-way recording: This unit does not sound warning beeps to inform the other party that the 
call is being recorded. To ensure that you are in compliance with any federal or state regulations 
regarding recording a telephone call, you should start the recording process, and then inform the 
other party that you are recording the conversation.
SAVE THESE INSTRUCTIONS
Important safety information
CAUTION
 X There may be a risk of explosion if you use a wrong type of batteries. Use only the supplied 
rechargeable batteries or replacement batteries (model BT183342/BT283342/BT191665/
BT291665).
 X Change this product’s batteries only in accordance with the instructions and limitations 
specied in this manual.
 X As with any batteries, do not allow conductive materials such as rings, bracelets or keys to come 
in contact with the metallic parts of the battery. The battery or conductor may overheat and 
cause harm.
 X Do not open or damage the batteries. Released electrolyte is corrosive and may cause injury to 
the eyes or skin. The electrolyte may be toxic if swallowed.
 X Do not dispose of the batteries in a re. Check with local waste management codes for special 
disposal instructions. To prevent re or shock hazard, do not expose this product to water or 
any type of moisture.
 X Observe proper polarity orientation between the battery and metallic contacts.
 X Do not disassemble your headset. There are no user-serviceable parts inside. Refer to qualied 
service personnel for servicing.