PortaTree Maximum Sensitivity for Banner SBL1 Sensors - Manual (Page 2)

Using a small jewelers type flat head screw driver slowly adjust the sensitivity of
the sensor. Turning the screw head clockwise will increase sensitivity, turning the
screw head counter counter-clockwise will decrease sensitivity. Adjust the
sensitivity so that when the palm of your hand is one inch away from lens the
sensor is activated. The red LED will illuminate when the sensor is activated. This
is the maximum amount of sensitivity that should be set and still work properly.
Too much sensitivity will result in the sensor reflecting off the side of cars and not
recognizing the vehicle has gone through the beam.
Now with your palm at one inch away from the lens of the sensor and sensor
activated slowly back your hand away and the sensor. At a distance of 2 to 3
inches away the sensor should no longer be able to reflect off the palm of your
hand. If it is still reflecting (red LED on) your sensitivity is TOO HIGH!
NOTE: When the sensor is 30 or more feet from the reflector, the red
alignment light is used to indicate the strength of the alignment. The faster the
Red LED flashes, the better the sensor is aligned to the reflector. Try to get the
fastest flashing rate that you can achieve for the best performance possible!
DO NOT ADJUST THE SENSITIVITY TO INCREASE FLASH RATE!!!
Sensitivity adjustment screw