Panasonic KX-TGMA44AZ Operating Instructions Manual page 6

Introduction
Expanding your phone system
Handset (optional): KX-TGMA44AZ
You can expand your phone system by
registering optional handsets (6 max.) to a
single base unit.
R Optional handsets may be a different
colour from that of the supplied handsets.
*1 Maximum receiver volume is 40 dB (when the booster is on).
Graphical symbols for use on equipment and their
descriptions
Symbol
6
*1
Explanation
Alternating current (A.C.)
Direct current (D.C.)
Protective earth
Protective bonding earth
Functional earth
For indoor use only
Symbol Explanation
Class P equipment
(equipment in which
protection against electric
shock relies on Double
Insulation or Reinforced
Insulation)
"ON" (power)
"OFF" (power)
Stand-by (power)
"ON"/"OFF" (power;
push-push)
Caution, risk of electric
shock