Find an unobstructed location where you can mount the units no further than 25ft† apart as shown in figure 1
below. The Transmitter and Receiver units should be facing each other and parallel, mounted at the same height
directly across the sensing area with the label area marked “This side down” toward the floor. The transmitter and
receiver should also be oriented so that the direction marked “A Counts” (shown on the bottom label) is the same
as the incoming traffic. You should also consider whether it is important to include small children in your counts.
If children are to be ignored then it is best to mount the sensors at about 4 to 5ft above ground level in order to
reduce the possibility of counting arms and legs since the sensors will increment each time the beams are broken
in sequence. * If children are to be counted then you should lower the mounting level to between 3 and 4ft and
understand that this may increase the potential for inaccurate counts. Temporarily mount the units on the wall
with two small pieces of double sided mounting tape then check alignment as explained below. After alignment is
verified mark the mounting area and proceed to step 2 below.
1. Testing Alignment: – Prior to permanently mounting the IR Transmitter and Receiver you should check
alignment as follows: While watching the small indicator LED on the IR Receiver (RX) walk completely
through the center of the sensed area back and forth about 10 times. If aligned properly each time you
pass the beams the small LED indicator on the IR Receiver will flash briefly. If the LED does not flash,
further alignment may be needed or the spacing between the units is too far.
2. Screw Mount: The casing for each the IR receiver (RX) and IR transmitter (TX) are equipped with two
predrilled holes which can be accessed inside the cover (see figure 3). Remove the four corner screws
located on the face of the enclosure. Remove the cover to expose the mounting holes in the top right and
bottom left corners. Be sure not to over tighten the screws when using this method.
