3M Littmann 3100 Manual page 10

The power settings provide different degrees of power consumption. In general, the longer the stethoscope remains in
an active mode, the greater its power consumption. The factory default is the MEDIUM level. (NOTE: The Auto Off power
management feature is further described below.)
To select the battery type: Select the BATTERY option in the Setup menu. Use the (-) and (+) buttons to scroll through the
list of battery types. The LITHIUM battery is a non-rechargeable cell especially recommended for low-temperature operation
of the stethoscope. The NIMH battery is rechargeable (external charger required). Press and release the (M) button to select a
setting. The factory default is the ALKALINE battery.
To select the preset (default) volume level: Select the SET VOL option in the Setup menu. Press and release the (M) button
to select the current level as default. The factory default is level 3.
To select the preset (default) fi lter setting: Select the SET FLTR option in the Setup menu. Press and release the (M) button
to select the current fi lter as default. The factory default is the diaphragm fi lter.
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