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  •  Make sure that the battery contacts are clean and free of rust or 
corrosion. Be sure to keep the laser level dry and use only new, 
high-quality, name brand batteries to reduce the chance of battery 
leakage.
  •  If the laser unit is heated above 50 °C (120 °F), the unit will not 
turn on. If the laser has been stored in extremely hot temperatures, 
allow it to cool. The laser level will not be damaged by pressing the 
on/off button before cooling to its proper operating temperature.
THE LASER BEAMS FLASH
The DW089/DW089CG is designed to self-level up to an average of 
4° in all directions when positioned as shown in figure 2. If the laser is 
tilted so much that the internal mechanism cannot level itself, it will flash 
the laser beams – the tilt range has been exceeded. THE FLASHING 
BEAMS CREATED BY THE LASER ARE NOT LEVEL OR PLUMB AND 
SHOULD NOT BE USED FOR DETERMINING OR MARKING LEVEL 
OR PLUMB. Try repositioning the laser on amore level surface. 
THE LASER BEAMS WILL NOT STOP MOVING
The DW089/DW089CG is aprecision instrument. Therefore, if the laser 
is not positioned on astable (and motionless) surface, the laser will 
continue to try to find level. If the beam will not stop moving, try placing 
the laser on amore stable surface. Also, try to make sure that the 
surface is relatively flat, so that the laser is stable.
Laser Accessories
DIGITAL LASER DETECTOR: DE0892/DE0892G (FIG. 9)
Some laser kits include aDEWALT Digital Laser Detector. The DEWALT 
Digital Laser Detector helps in locating alaser beam emitted by the 
laser in bright light conditions or over long distances. The detector can 
be used in both indoor and outdoor situations where it is difficult to see 
the laser beam. 
DW089_DW089CG - User Manual - NA - May 2018.indd   22 5/25/2018   10:40:48 AM