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Sensaphone
®
Model 1108 User’s Manual
10
Any sensor can be attached to the Model 1108 using 22-gauge
wire. The sensor can be several hundred feet from the unit, as
long as the total resistance of the circuit is not greater than 50
ohms. Use wire appropriate for the application.
23456781
GND GND GNDGND
Sensor wired to
Alert Input 3
Sensor wired to
Alert Input 4
Figure 2-7. Two Sensors Wired to Adjacent Inputs
Share the Same Ground Terminal Screw
NOTE
Do not use sensors, switches, or relays that
supply any voltage or current to the Model 1108.
Be aware of proximity to other electrical wires or
components when placing wires that lead from
the sensors to the unit. Avoid running the wires
near electrical devices that use high voltage or
current, such as motors, heavy machinery, etc.
This voltage may be inductively coupled into the
sensor wiring and could result in damage to the
the Model 1108’s circuitry. Try to place wires at
least 6 inches from other electrical wiring or
devices.