Phonetics 1104 Manuale Utente

The Model 1104 can be damaged by power surges and lightning
through the telephone line and the 120 VAC power supply.
Although the Model 1104 has built-in surge protection, we
recommend that additional protection be obtained for the unit and
for any electronic equipment that is attached to your power supply
and telephone lines. Power surge protection is especially
important if you live in a lightning-prone area.  The ISOTEL
Surge Protector Model IB-4 is available through Sensaphone, Inc.
See Appendix B.

The Model 1104 is provided with an AC power transformer that
will plug into any standard 120 VAC outlet and a battery backup
(batteries not included) that enables the unit to continue
functioning if AC power is removed (due to electric power
disruption or failure). The Model 1104 uses six, D-cell alkaline
batteries. Do not use rechargeable nicad batteries.

Be sure that the AC transformer is plugged into an
outlet before installing batteries.

To install the batteries, open the battery compartment hatch
located underneath the unit, align batteries according to the
diagram shown in Figure 2-2, and replace the hatch.