switel DFT 917 series, Operating Instructions Manual

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2
Safety Information
1 Safety Information
Please read this operating instruction manual thoroughly.
Intended use
The telephone is suitable for telephoning within a public telephone network
system. Any other use is considered unintended use. Unauthorised modifica-
tion or reconstruction is not permitted. Under no circumstances open the
device or complete any repair work yourself.
Installation location
Prevent excessive exposure to smoke, dust, vibration, chemicals, moisture,
heat and direct sunlight.
Do not use the handset in potentially explosive areas.
Power adapter plug
a
Attention
: Only use the power adapter plug supplied because other
power supplies could damage the telephone.
Ensure access to the power adapter plug is not obstructed by furniture or
such.
Rechargeable batteries
a
Attention
: Never throw batteries into a fire. Only use batteries of the
same type. Pay attention to the correct polarity. Incorrect polarity of the
batteries represents a risk of explosion during charging.
Power failure
The telephone cannot be used to make calls in the event of a power failure.
Always keep a cord connected telephone which operates without an external
power supply available in case of emergency situations.