To change unit of measure from MPH to KPH and vice versa, make sure the
unit is “ON”. Next, pull the trigger and leave engaged and quickly press the
button underneath the LCD display (quick presses of the button underneath the
LCD display will toggle between MPH and KPH). The unit of measure will be
displayed in the top right hand corner of the LCD display. When you are satisfied
with the unit of measure, simply release the power and trigger buttons.