Product Manual

20 ©2016 Johnson Level & Tool - Rev. 2
• When the sound signal is a fast beep, move the instrument slightly
upwards.
• When the detector makes a short beep, move it slightly downwards.
• When the detector makes a continuous sound, it is on grade with
the laser beam.
• If there is no beep heard, the detector has not received the laser
signal.
(f) Automatic Shut-off Function
• The detector will automatically turn off if it has not received a laser
signal for 10 minutes.
(g) Detector Maintenance
• When you are done using the detector, return it to its packing case.
• Keep the detector, particularly the detecting window, clean. If unit
becomes dusty, use a clean cloth to gently wipe it clean.
• Avoid knocking the detector over or allowing it to fall on the
ground.
• Although the detector is rain resistant, you should avoid submerg-
ing the unit in water or other liquids. If detector comes into contact
with water or other liquids, wipe it dry immediately.
• Do not use the detector around fire or expose it to fire in any way.
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