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LINE

DOT

PULSE

MANUAL

MAXIMUM OUTPUT POWER
< 5mW @ 510-530nm

40-6688 Operator’s Manual

Thank you for purchasing this Johnson self-leveling 

combination cross-line and dot laser featuring GreenBrite® 

technology. This laser projects one cross-line laser and 

two, three or five simultaneous dots.

SAFETY INFORMATION

MAIN COMPONENTS

OPERATING PANEL OVERVIEW

INSTALLING/CHARGING 

BATTERIES

PENDULUM LOCK

This is a Class IIIa laser tool and is manufactured to 

comply with CFR 21, parts 1040.10 and 1040.11 as well  

as international safety rule IEC 285.

The pendulum lock secures the laser during transport  

to prevent damage to the self-leveling mechanism. It  

also enables the laser to be used at any angle in manual  

mode. To unlock the pendulum  

and allow it to self-level, rotate  

the switch to the 

ON

 position,  

indicating the laser can be  

powered on in self-leveling  

mode. To lock the pendulum,  

rotate the pendulum lock  

switch to the 

OFF

 position,  

indicating the laser will be 

powered off.

LINE: 

Enables/disables the  

laser cross-line (horizontal,  

vertical, or both).

DOT: 

Enables/disables  

the laser dot (2, 3 or 5).

PULSE/MANUAL: 

Enables pulse mode, so 

the laser can be used with a detector (sold 

separately) or manual mode (not self-leveling).

Solid if on, will flash if batteries are low.

If in pulse mode, LED is on.

If in manual mode, LED is on (not self-leveling).

40-6688 LI-ION CHARGING:  

Remove the battery from the laser  

and plug the charger directly into  

the battery’s charge port. The  

charger will illuminate red to  

indicate charging, then change to 

green to indicate fully charged.

This tool comes with a Li-ion battery 

and charger, or the option to use 4 AA 

alkaline batteries. When using AA’s, 

always use the alkaline battery holder 

and ensure correct battery polarity.

THIS TOOL EMITS LASER RADIATION. DO NOT  

STARE INTO BEAM. AVOID DIRECT EYE EXPOSURE.

 ATTENTION:

•  Read all instructions before operating this tool.  

Do not remove any labels from the tool.

•  Do not project the laser into the eyes of others.
•  Do not set up laser tool at eye level, or operate the tool 

near reflective surfaces, as the beam can be projected 

into your eyes or the eyes of others.

•  Do not place the laser tool in a manner that may cause 

someone to unintentionally look into the laser beam. 

Serious eye injury may result.

•  Do not operate the tool in explosive environments, (i.e., 

in the presence of gases or flammable liquids).

•  Keep the laser tool out of the reach of children and 

other untrained persons.

•  Do not attempt to view the laser beam through optical 

tools such as telescopes - serious eye injury may result.

•  Always turn off the laser tool when not in use or when 

left unattended for any period of time.

•  Disassembly or repair by unqualified  

persons will void the warranty.

 SAFETY LABEL LOCATIONS:

LASER 

EMITTING 

WINDOWS

PENDULUM  

LOCK

OPERATING  

PANEL

TRIPOD THREAD  

(UNDERSIDE)

Download this manual at  

www.johnsonlevel.com/manuals 

40-6688 REV 3

OPERATING THE LASER

•  Insert batteries. See INSTALLING BATTERIES.
•  Install the laser on a tripod, the included magnetic  

wall mount bracket or other stable surface.

•  To use the laser in self-leveling mode, unlock the  

pendulum. The battery LED on the keypad will illuminate.  
See PENDULUM LOCK.

•  To use the laser in manual mode, leave the pendulum  

locked and press the       button. In manual mode,  
the battery LED on the keypad will illuminate and the  

TILT

       LED will flash to alert you that the pendulum  

is locked and the laser is not self-leveling.

•  Power on or off each individual laser by pressing        

to cycle through horizontal, vertical, both line, or no line  
output or       for 2, 3, 5, or no dots. Disabling the unneeded 
lines/dots significantly extends the life of the battery.

•  Press       at any time to enable pulsed operation, which  

makes the beam detectable by compatible laser detectors.  
The 

PULSE

 LED       will illuminate when in pulse mode.  

Note:

 For information about laser detector compatibility and 

operation, contact Johnson or your local Johnson dealer.

•  When you have completed your work, to turn off the laser  

from self-leveling mode, lock the laser pendulum and the 
battery LED on the keypad will go out. To turn off the laser 
from manual mode, press the       button until all of the keypad 
LED's are not illuminated. Store the tool in its provided case.

LINE

DOT

PULSE

MANUAL

LINE

DOT

PULSE

MANUAL

LINE

DOT

PULSE

MANUAL

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DOT

PULSE

MANUAL

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DOT

PULSE

MANUAL

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DOT

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MANUAL

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DOT

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MANUAL

BATTERY  

DOOR

LINE

DOT

PULSE

MANUAL

LINE

DOT

PULSE

MANUAL

LINE

DOT

PULSE

MANUAL

LINE

DOT

PULSE

MANUAL

LINE

DOT

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MANUAL

LINE

DOT

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MANUAL

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