Troubleshooting
Problem
LEDs are not
Illuminated (transmitter or
receiver)
Low battery indicator
blinks even though
the battery has
been inserted
(transmitter or receiver)
Alarm does not output
Alarm outputs consistently
Batteries are going flat too
quickly
Frost, snow or
heavy rain causes
false alarm.
Wall tamper does
not activate.
Replacing the batteries
When replacing batteries, remove all batteries before inserting new ones. This ensures that the low battery indicator
LED resets.
Possible cause
Reversed battery polarity
Low battery power
Reflection from the floor or
wall.
Beam has not been blocked.
Channels of transmitter
and receiver are different.
Multiple photoelectric detector
for long distance
or beam stacking applications.
Optical alignment was not
performed properly.
Tamper is not closed
Optical alignment not
optimized.
DQ output not enabled
Screws between the
chassis and the back-box
are loose.
The waterproof packing on
back-box is not attached.
Corrective action
Check battery polarity
Replace batteries
Align beams away from the
floor or wall.
Block all four beams.
Set the same channel to
both transmitter and receiver
Set channels 1-3 or 2-4 or
1-4.
See Optical alignment.
Attach the cover of the tamper
lock plate properly
See Optical alignment
See Optional: D.Q. output
Tighten screws
Remove chassis from the
back-box and attach the
waterproof packing to
the chassis correctly.