Johnson Level & Tool Mfg. 40-6791M - Manual (Page 7)

The LEDs will show the following when detecting the laser beam:
©2011 Johnson Level & Tool - Rev. 1 7
LEDs are
all off
No laser
beam is
detected
The laser
beam is
up
The laser
beam is
up
The laser
beam is
level with
the on
grade LED
(green)
indicator
The laser
beam is
down
The laser
beam is
down
The last receiving
position has been
memorized by
the detector. The
detector will keep
blinking until it
receives another
signal or is
turned off.
The first
up red
LED blinks
fast
The
second up
red LED
blinks fast
The green
LED blinks
fast
The first
down red
LED blinks
fast
The
second
down red
LED blinks
fast
The LED
blinks
slower
Note: When the voltage is low the detector will power off
automatically and the unit needs to be charged.
4862H_Manuals 6/20/11 12:47 PM Page 7