Sensaphone 1400 - Manual (Page 29)

Chapter 2: Installation
27
+ -
Z O N E
1
+ -
Z O N E
2
+ -
Z O N E
1
+ -
Z O N E
2
+ -
Z O N E
1
+ -
Z O N E
2
4–20mA Transducer
Dry Contact
Input Zones
Terminal Strip
Dry Contact Sensor
NO/NC
Input Zones
Terminal Strip
Temperature Sensor
Thermistor
Input Zones
Terminal Strip
External Power Source
4-20mA transducer
VDC
4–20MA
Figure 5: Different Sensor Types connected to the Terminal Block
External Microphone
An (optional) external microphone may be connected to the MIC
terminals to allow remote listen-in capabilities and high sound
level detection. (
NOTE: The built-in microphone is for message
recording only.) An external microphone with a 25' cable may be
ordered from your Sensaphone supplier: Part number FGD-0057.
The microphone connects to the terminals labeled MIC. Be sure
to observe proper polarity when connecting the microphone: Red
wire to
+ and Black wire to – . See Chapter Five for information
on programming the Listen-in Time, High Sound Alarm Recognition
Time, and Sound Level Sensitivity (calibration).
Wiring Recommendations
The 1400 will work fine in indoor environments using unshielded
cable. When wiring will be subject to long lengths (>250') or if run
outdoors, it is highly recommended that shielded cable be used and
that the shield be connected to an earth ground. Also, be sure to use
the appropriate gauge wire based on the distance and sensor type.
See chart below:
Wire Gauge Thermistor NO/NC Contact & 4–20mA
#24 250' 1000'
#22 500' 2000'
#20 1000' 4000'