Sensaphone 400 - Manual (Page 31)

Chapter 2: Installation
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2 .12 outdoor wIrIng
When wiring sensors outdoors, DO NOT allow exposed wires to run freely
in open air; under such conditions, the Model 400 is susceptible to serious
damage during a lightning storm. Depending upon the distance outdoor
wiring must travel, consideration should be given to the use of shielded
wire inside a metal conduit. Both shield and conduit should be connected
to an earth ground. This prevents stray voltage from entering the unit.
Figure 2-10. Potential Sensor Damage from Stray Electrical Noise
2 .13 dISConneCtIng the model 400 For
Storage or SeaSonal uSe .
If you plan to employ the Model 400 as a seasonal “watchdog” for a few
months during the year, you must disconnect all wires from the unit com-
pletely to avoid damage to the circuitry when the unit is not in use. If the
unit is unplugged but left in place with all the sensors still connected, the
wires act as antennae that draw in any stray “electrical noise” from such
devices as fans, blowers, microwaves, etc.
Additionally, it is important to remove the batteries, or they will discharge
until they fail.
Preserve your Model 400 during the off-season, or when not in use:
• Remove the sensor wires at the screw terminals
• Remove the batteries
• Unplug the unit and store in a safe place