Extech Instruments 407750 Music Mixer User Manual


 
407750-EN v2.2 07/13
8
Battery Replacement
When the low battery message appears on the LCD, the 9V battery has fallen to a critically low
voltage level and should be replaced as soon as possible. The battery compartment cover resides
at the rear of the meter. Remove the rear battery compartment screw and remove the battery
compartment cover, change the battery, and replace the compartment cover.