Bose A20 Aviation 2015-present Owner's guide - Page 11

Preparing the Headset for Use The battery compartment The headset is shipped with factory-set operation defaults. If you want to alter these defaults, you can change the operation switches located inside the control module battery compartment. Opening the battery compartment Press down firmly on the finger indent and slide the cover down. The cover is ­tethered to the module. Do not attempt to detach it. Note: The battery compartment cover is designed to remain securely closed. You may need to use extra force when pressing down and releasing the cover. The operation switches The operation switches control: Priority (BT-AUX); Intercom (MON-ST); Auto On feature; and Auto Off feature. For details see the table on page 12. ON - OFF AUTO ON AUTO OFF ON - OFF ON - OFF AUTO ON AUTO OFF ON - OFF • The Auto On feature is only available for aircraft powered versions. • The Intercom (MON-ST) option is only available for headset configurations that support two-channel or ­stereo intercom systems. • The Priority (BT-AUX) ­option is only available for ­Bluetooth headsets. Changing the operation switches 1. Open the battery compartment. 2. If batteries are installed, remove them. In the battery compartment, you can observe and change the switch positions. 3. To change a switch position, use a pen or a small, flat-tipped screwdriver to gently move the switch. English - 11