GEM
ORO PRO-M 3
12
13
remove the battery compartment
door located on the end of the
PRO-M 3 by using your thumb
to slide the textured area down
and in the direction of the
arrow
E
. Remove the NiMH
rechargeable batteries while
making note of the polarity
positioning on batteries. Then
insert (3) high-quality AAA 1.5V
alkaline batteries into the battery
compartment. The proper polarity
positioning is indicated on the
side of the battery compartment
wall showing the direction of
positive (+) and negative (-)
polarity
F
. Always be certain
that the batteries are correctly
positioned in the battery holder.
Then carefully replace the
battery compartment door.
2. The PRO-M 3 batteries may
be charged by placing it in the
optional UltraDock 3 battery
charging station with the micro-
USB power cord plugged into the
rear of the charging station or by
plugging its supplied micro-USB
power cord into the rear of the
tester and the USB adapter cube
directly into a wall outlet. Once
the tester is connected to the AC
adapter or the charging station,
the tester will switch to its DC
power mode. The tester’s built-in
Intelligent Charging Circuit ICC
will automatically identify the
type of batteries installed (NiMH
rechargeable batteries or alkaline
batteries). If alkaline batteries
are installed, the circuit will
automatically cut off the power
supply to the batteries so that
the alkaline batteries will not be
recharged. If NiMH rechargeable
batteries are installed, the
batteries will be recharged and
at the same time the tester may
be used with the AC adapter.
3. To turn the PRO-M 3 ON press
the oval shaped power button,
located on the top center edge
BATTERY POLARITY
F
TESTER BATTERY COMPARTMENT
E
BATTERY DISCHARGE INSULATOR TAB
D