Certain private telephone systems and public switching equipment
may not accept the Model 1108 dialing or may generate an
unacceptable ring signal. In those cases, a dedicated line may be
required. Consult the supplier of your telephone system if you
encounter problems.
If you do not have a modular telephone extension at the Model
1108’s location, you must contact your local telephone company
to have one installed (there is a charge for this service). If you
have four-pin jacks, adapters are available to convert them to the
modular plugs. Contact your local telephone company or
electronics parts store.
CAUTION
Never install telephone wiring during a lightning
storm. Never install telephone jacks in wet locations
unless the jack is specifically designed for wet loca-
tions. Never touch uninsulated telephone wires or ter-
minals unless the telephone line has been disconnect-
ed at the network interface. Use caution when
installing or modifying telephone lines.
To install the telephone line, plug the modular telephone jack
provided into any standard RJ11 phone outlet. Refer to Figure
2-4.
Figure 2-4. Installing the Telephone Line
On the back of the Model 1108 is a female telephone jack. This
is provided so that a telephone or other answering device may be
used on the same line as the unit. It is not necessary to hook up a
telephone for the Model 1108 to operate.
2.8 The Microphone
The Model 1108 is provided with a built-in microphone which is
used to monitor high sound levels produced near the installation
site. The sensitivity of the microphone is configurable and will
detect a continuous as well as a pulsating alarm. Note that
Sensaphone®Model 1108 User’s Manual
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