EMX Industries, Inc. Tech support: 216-518-9889 6/6
IRB-MON_Rev3.3_072720 technical@emxinc.com
EMX Industries, Inc. products have a warranty against defects in materials and workmanship for a period
of two years from date of sale to our customer.
Does not detect obstruction
Sensitivity is too high
Signal is reflecting off another
surface
Decrease sensitivity
potentiometer counter-
clockwise
Check area for highly reflective
surfaces
Receiver green LED flashes
continuously, indicating an
obstruction when one is not
present
Sensitivity is too low
Transmitter does not have
power
Receiver does not “see”
transmitter
Increase sensitivity
potentiometer clockwise
Check power source of
transmitter
Make sure transmitter and
receiver are aligned
Receiver activates but does not
transmit signal to operator
Faulty connection between
receiver and operator control
input
Verify all wires and terminal
connections
Transmitter too close to receiver
Decrease sensitivity
potentiometer counter-
clockwise
Increase distance between
transmitter and receiver
Output relay chatters constantly
between open and close
All 4 DIP switches are in the OFF
position
Consult the Configuration
Settings table and set the
DIP switches according to the
UL325 monitoring method
detailed by the gate or door
operator manufacturer.
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