Temperature Sensors; The Microphone; Alert Inputs - Phonetics SENSAPHONE 1100 Owner's Manual

On the back of the 1100 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
1100 to operate.

TEMPERATURE SENSORS

The Model 1100 is provided with one pre-wired 2.8K temperature sensor
(also called a thermistor?~. It is used to monitor temperature. The Model
1100 evaluates the measurement to see if it exceeds the user-pro-
grammed high and low limits. The temperature reading is also given in
the status report.
To monitor the temperature at a location away from the unit, the remote
temperature sensor may be used. The part number is FGD-0005 and is
available from Phonetics. When connecting the remote temperature
sensor, the 2.8K thermistor must be removed.

THE MICROPHONE

The 1100 is provided with a built-in microphone to monitor high sound
level at the unit's location. The microphone will continuously listen for a
high sound level that increases approximately 10 decibels over the
normal sound level at a frequency of about 1000 Hertz or more. (NOTE:
The sensitivity of the microphone can be changed. See Chapter 4, page
31.) If this sound level exists for 8 consecutive seconds or longer (such
as with a smoke alarm or burglar alarm), the Model 1100 will dial out with
an alarm message.
NOTE: The location of the audible alarm in relation to the micro-
phone is extremely important. Normally, the 1100 and the audible
alarm must be in the same room. The maximum distance can
vary considerably depending on the alarm, the acoustics, and
the size of the room.
During an alarm dial out, the microphone allows four 4-second intervals
to listen in to the Model 1100's location.
During a call in for a status report, the microphone allows you to listen to
on-site sounds for the user-programmed time interval.

ALERT INPUTS

The Sensaphone Model 1100 can monitor up to 4 dry contact inputs.
(The fourth input would be from the AUX terminal. See page 12 for
details). Each input consists of two terminal screws: one marked #1, #2,
or #3 under the heading ALERT; and the other marked GND for ground.
The fourth input is marked AUX. See Fgure 5:
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