Kustom Signals Pro-Lite Reference Manual page 35

Holding the Pro-Lite as stationary as possible, use the
aiming reticle to point the instrument at the desired target
and depress the trigger. You will see a series of four dashes
"----" directly below the aiming reticle while the laser is
firing and range measurements are being made. After
approximately 0.3 seconds, the distance to the target
appears both in the HUD and under "Range" on the rear
panel LCD. Distances are displayed to the nearest 0.1
feet/meter in the HUD and the rear panel LCD. Simply
aim and depress the trigger again to make additional range
measurements.
If you are using the Pro-Lite +, holding the trigger
depressed will continue taking range measurements.
Since the infrared pulses used by the Pro-Lite are close
to the visible spectrum, you will find the target objects that
best reflect light also provide maximum range from the
instrument. If you experience trouble getting a range
reading to a certain part of a distant object, try a different,
flatter surface of the object that may have superior
reflective characteristics. Pro-Lite has a maximum
targeting distance of 1,500'. The Pro-Lite + has a
maximum targeting distance of 2,000'.
If the Pro-Lite + is aimed at a fairly large, distant object,
and then "panned" or swept across the surface of the
structure, you may occasionally hear the intermittent
aiming tone sound. This occurs because the unit is
attempting to interpret a series of changing range
measurements as a velocity. Normally, no range reading is
displayed because this erratic motion does not fulfill the
accuracy criteria of the range determination process.
Keep in mind that when making range measurements
with the single-shot Pro-Lite version you will display only
one range. You will not be able to sweep across the target.
Also, keep in mind that when making range
measurements, the instrument does not measure distances
shorter than 10 feet (3.5 meters). Aiming the Pro-Lite at
objects closer than 10 feet will not produce any range or
speed displays.
Pro-Lite Operator's Manual
Page 29