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LPU-400 – Indicator
Lights Overview
Power Outage
(Power Cut/Drop)
Alarm Relay
Output LED
CPU Power
Indicator LED
Power Interface
Operation
Indicator LED
Voltage Input
Indicator LED
Voltage Passes
the Surge
Protection of the
Surge Protection
Sensitivity
Level
Signal
Detection
Indicator
LED
Alarm Indication /
Relay Latched
USC-C For
Calibration
Sensitivity
Jumper
IMPORTANT!
The red LED has to be at number 1
SOLID with the fence is not touched.
If there’s any flicker or it’s on any
other LED other then number 1 then
there is “noise” on the sensor cable
that would cause false alarms.
Noise can be cause by:
1.Loose connections
2. Resistance other than 0.95-
1Mohm
3. Lack of sensor ground wire (page
16)
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