Johnson Level & Tool Mfg. 1457-1000 User Manual

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Push and hold this button in for 3 seconds and then release to turn
on the backlight function. The LCD backlight will stay on for
approximately 30 seconds with no movement of the level. Any
push of a button or movement of the level will turn the backlight back
on. To exit the backlight function, push and hold this button in for
3 seconds and then release. The default setting for the backlight is off.

Mode Button
Push this button once to switch from one unit of measure to another.
This controls which unit of measure your digital level will measure in.
Your level has the capability to measure in degrees, percentage of
slope and inches/feet in fractions. A symbol on the top of the LCD will
show which unit of measure you are currently in.

Push and hold this button in for 3 seconds and then release to enter
the automatic shut off mode (5 minutes or 2 hours). When the button
is held in for 3 seconds and released the LCD will show a “5” blink-
ing 3 times and then return to the regular display, the automatic shut
off is now set to 5 minutes. When the button is held in for another 3
seconds and released the LCD will show a “2H” blinking 3 times and
then return to the regular display, the battery icon will be displayed
as a reminder that the digital level is now set for 2 hours. The default
setting is for automatic shut off in 5 minutes. NOTE: When the battery
is low (less than 5%) the digital level will default to 5 minute auto-
matic shut off, the battery icon will begin to flash and there will be no
response to pushing this button in for 3 seconds.

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