Bose A20 Aviation 2015-present Owner's guide - Page 17

Using the Headset Using the control module If you purchased the Bluetooth® version of the headset, you received the Bluetooth control module. If not, you received the conventional control module. Bluetooth® control module Conventional control module Bluetooth indicator Bluetooth multi-function button Secondary Audio Mode selector: Mute Intercom ­prioritized over secondary sources Mix Intercom mixed with ­secondary source(s) Off Intercom only Power button Action Turn on the headset Turn off the headset Dim the power and ­Bluetooth indicators Left/Right Intercom Volume controls Power indicator Power button Bluetooth Volume Up button Bluetooth Volume Down button Auxiliary (AUX) audio input Secondary Audio Mode selector: Mute Intercom ­prioritized over secondary sources Mix Intercom mixed with ­secondary source(s) Off Intercom only What to do Press once. Press and hold for three seconds. Note: When powered off, the headset will still provide pas- sive audio ­communications. Note: Repeated pressing will not speed up the power off event. If the unit does not power off, wait 3 seconds try again. Press twice quickly. Repeat to brighten. English - 17