User's Manual

EN
· Heating ducts and other metal construction
shielding radio signals
· You are too close to appliances, such as
microwaves, stoves or computers
· Atmospheric conditions, such as strong
storms
· Base unit is installed in the basement or
lower floor of the house
· Base unit is plugged into an AC outlet with
other electronic devices
· Baby monitor is using the same frequency.
· Handset battery is low
· You are out of the base unit’s transmission
range
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This product is designed to give you years of
service if handled properly. Please observe the
following guidelines:
· Avoid putting the phone near heating
appliances and devices that generate
electrical noise, such as motors or
fluorescent lamps.
· Do not expose your telephone to direct
sunlight or moisture.
· Do not tamper with the internal components.
· Do not mix new and old batteries, or
batteries of different types.
· Avoid dropping the phone and other rough
treatment.
· Clean the phone with a soft cloth, but never
use a strong cleaning agent or abrasive
powder. This will damage the finish.
· Remove the batteries if storing this product
for a long period of time.
· Periodically clean the charge contacts on
the handset and base unit with a clean pencil
eraser.
· Do not make any changes or modifications
to this product.
· Retain the original packaging in case you
need to ship the phone at a later date.
MAINTENANCE AND CARE
The freedom that your cordless telephone can
offer is fully dependent on the performance of
the rechargeable battery in the handset. To
maximize the battery performance, follow these
guidelines:
MAXIMIZE BATTERY PERFORMANCE
Charge it for a full 15 continuous hours
· Before initial use of your new battery,
charge it for 15 continuous hours. The
proper initial charging is very important to
maximize the battery performance.
Keep the contacts clean
· You can never fully recharge the battery if
the contacts are dirty. Clean all the contacts
(two at the bottom of handset and two in the
base cradle) periodically using a pencil
eraser.
Do not replace the handset in the base unit
cradle after each call
· Repeated short charging creates a “memory
effect” in the battery. Once a rechargeable
battery acquires this “short memory”, it
sends a “CHARGE BATTERY” signal even
when it is almost fully charged. The battery
then needs to be charged frequently. To
avoid this, leave the handset away from the
cradle until it really needs recharging.
Refresh battery
· If your battery seems to need recharging
more often than usual, it may have lost part
of its charging capacity because of
premature recharges. To bring back its full
capacity, try “refreshing” the battery:
1. First discharge the battery by leaving
the handset in TALK mode until the
battery low indicator turns on.
(Disconnect the base unit from the
telephone line, so that your line is not
busy all the time).
2. Then charge it for 15 continuous
hours.
3. Repeat the above once more.
You phone operates on a 2.4GHz ISM digital
Worldwide Digital Cordless Telecommunication
(WDCT) platform technology. This product uses
75 regular channels plus 14 channels for
substitution when the environment is interfered.
Here are the specifications for 2.4GHz Digital
Cordless Telephone:
SPECIFICATIONS
TW339 manual_Eng 5.p65 3/5/05, 9:23 AM22