Operation Manual

6
Preparation
Battery Indicator Tones
An indicator will sound when the battery’s voltage is
low. You have approximately 5 minutes* to replace
the battery. A tone lasting two seconds will sound
just before the battery stops working.
* Actual time between low battery indicator and shut
down will vary depending on environmental noise
levels and brand of battery used.
Tamper Resistant Battery Compartment
To lock the battery door:
Use an appropriate tool to
slide the recessed switch to
the left until it “clicks” and
the colored mark is visible.
To unlock the battery door:
Slide the recessed switch to
the right until it “clicks” and
the colored mark disappears.
Locking the door is not
required for operation.
My hearing instrument has a tamper resistant
battery compartment.