Johnson Level & Tool Mfg. 40-6790 - Manual (Page 5)

©2009 Johnson Level & Tool 5
Power Key: Turn on/off the instrument
Sound Key: Turn on/off the sound
Coarse/Fine Detecting Key
Backlight Key
Battery Installation
1. Rotate battery compartment screw counterclockwise to open.
2. Put 4 “AA” Alkaline Batteries in (note polarity) and clockwise
rotate battery compartment screw to close.
3. When the battery voltage is low the unit will display a low
battery symbol and buzz for 2-4 seconds. The backlight
function is disabled when the low battery symbol is on.
Note:
• Remove the batteries when the unit is being stored for a long time.
• When the low battery indicator is displayed, change the batteries
soon.
4. Operating Instructions
2408H 7/22/09 8:12 AM Page 5