SEHT 30-75B USER MANUAL Edition 1.0
Page 4
provide reduced and uneven voltage which can interfere with the correct headset
performance.
The SH30-75B has a failsafe mode and will continue its basic operations of hearing and
transmitting in the event of battery failure or without batteries fitted.
DO NOT mix old and new batteries together.
Battery Life
The use of alkaline batteries can typically provide up to 38 hours of use, the exact
duration however depends on the amount of noise reduction required in your cockpit. To
maximise battery life turn off ANR when headset is not in use.
Battery Installation
Press firmly and slide to one side to open or close the battery box
Mono/Stereo Operation
The switch is located on the LEFT side of the batter bay. This should be selected to the
same as your avionics wiring.
For most general aviation aircraft the mono setting is
correct. If you only hear in one side of your headset then switch to the other setting.
Auto Shut Off
The SH30-75B is set to switch off automatically if it is disconnected from the aircraft or an
external device for a period of time in order to preserve battery life.