7
IV. A
LKALINE OR
R
ECHARGEABLE
B
ATTERY
, B
ATTERY
L
IFE
,
B
ATTERY
L
OW
A
LERT
B
ATTERY
L
IFE
Alkaline batteries
about 70 hours with headphones.
Batteries
about 20 hours with headphones.
B
ATTERY
L
OW
A
LERT
When the battery voltage is too low to power the detector, you will hear a series of beeps like
an alarm.
You must change the batteries soon.