©2012 Johnson Level & Tool
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When the laser signal is near the on-grade mark, the displayed up
and down arrows will decrease as the distance to the on-grade mark
decreases.
1. When detecting a horizontal laser signal, it is
important to have the bubble vial centered, as the
deflection of the receiver will influence its receiving
accuracy.
2. When detecting a vertical laser signal, it is important
to have the bubble vial centered, as the deflection of
the receiver will influence its receiving accuracy.
3. Keep the reception window facing the laser while detecting.
4. Hold the unit stable while detecting.
LED Function
Power on and press the LED key, the LCD will now be backlit.
Automatic Shut-off Function
When the unit does not receive a laser signal for 6 minutes, the
unit will power off automatically.
Low Battery Display Function
When the battery sign blinks on the LCD, the battery is
low and needs to be replaced. If the battery is very low,
the unit will power off automatically. Replace the battery.
Laser signal
Laser signal
Laser signal
Laser signal
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