User guide

7DT412/DT422/DT432
Important User Information
Power supply
• Connect the AC power adapter of the charging
unit only to the designated power sources as
marked on the charger.
• Make sure the cord is positioned so that it will
not be subjected to damage or stress.
• To reduce risk of electrical shock, unplug the
chargers from any power source before
attempting to clean or move it.
• The AC power adapters must not be used
outdoors or in damp areas.
• Never modify the cord or plug. If the plug will not
fit into the outlet, have a proper outlet installed
by a qualified electrician.
• Limit the distance between the mains socket and
the cordless phone when charging for easy
accessibility.
• As an energy saving measure, disconnect the
charger from the main socket after charging.
• When unplugging the mains adapter from the
power outlet, make sure that your hands are dry
and ensure that you hold the solid portion of the
mains adapter.
• Do not pull on cables.
Charging and batteries
Please read carefully the following
important precautions before the first
time use of the batteries. Make sure
to understand and observe all
cautionary instructions stated, so as
to avoid any possible safety hazards
that are caused by any misuse, misapplication
or damage to batteries.
• Only use batteries, mains adapters or desk and
rack chargers which have been specifically
designed for use with your product.
• Use of power sources not explicitly
recommended may lead to overheating,
reduced battery performance, distortion of the
equipment and fire or other damages.
• Cordless phones are equipped with Nickel Metal
Hydride (NiMH) batteries or Lithium Ion Lion
batteries. In a complex infrastructure, the talk-
and standby time may differ, due to the
consequence of the increase in signaling.
• The battery must always be completely charged
(minimal 4 hours) before first time use.
• The battery in your product is designed to
withstand many charge cycles.
• Use only the recommended charging
equipment.
• Improper charging can cause heat damage or
even high pressure rupture.
• Observe proper charging polarity.
• Do not solder lead wires directly onto the battery.
• Do not allow water to come into contact with the
battery.
• The initial charging of a NiMH battery will cause
the battery to become warm. This is a normal
effect of charging NiMH batteries.
• The batteries are replaceable, however it is not
the intention to do this frequently.
• Only charge the batteries when placed in the
phone.
• Use only the specified battery-packs for your
product.
• Never heat or dispose of the battery into a fire,
which, or else, may cause leakage, burst or fire.
• Remove the carrying case from the product
while in charger.
• Do not cover the product while being charged.
Do not charge the phone in a closed cabinet or
drawer. The charging of the battery is a chemical
process and causes the battery to become
warm during charging. Make sure the
environment in which the phone is charged, is
well vented.
• The cordless phone can be charged either when
switched on or off.
• Do not connect the battery's positive and
negative leads altogether in any circumstances.
• Do not strike or drop the battery. It may cause
damage to the battery.
• Do not charge the battery below
+5°C (+41°F). Be sure to charge the
battery between +5°C and +45°C
(+41°F and 113°F). Charging beyond
these conditions may impair the
battery performance and shorten the
life cycle.
• Do not use battery packs from different types,
brands or of different capacities.
• The battery is to be stored in a dry cool place,
with the ambient temperature of approx. +25°C
(+77°F) for best performance.
• The battery continues to discharge a minimal
portion of its power, even if the product is
switched off or the battery is removed.
• Dispose the battery in accordance with all local
regulations, applicable in your country.