6
Basic Operations
Hearing protector will give a “battery low” 
warning every one minute when battery 
voltage is low. Additional warnings will 
occur as hearing protector powers down. 
Replace batteries at this time.
After 2 hours of non-activity, a 10-second 
countdown will begin before hearing protector 
automatically powers down. To reset auto  
shut-off, simply adjust volume knob.
After auto shut-off, press and hold the On/Off/
Volume knob for 2 seconds to turn back on.
Low Battery Warning: Auto Shut-off:
BATTERY 
LOW