General Tools and Instruments MM1E v.1 - Manual (Page 6)

SETUP INSTRUCTIONS
INSTALL BATTERY
To open the battery compartment, turn the meter over and
push the flange on the bottom of the battery compartment
cover up with your thumb. Lift and remove the cover and set
it aside. Plug the included “9V” battery into the wired socket
inside the compartment. The terminals of the battery and the
socket mate in only one way, with the smaller male terminal
plugging into the larger female terminal. Close the battery
compartment by replacing its cover and snapping it shut.
OPERATING INSTRUCTIONS
To power on the MM1E, slide the Power/Scale switch on the
back of the meter to the HIGH position.
Moving the switch should cause some or all of the LEDs on
the front panel to illuminate in sequence from bottom to top.
If no LEDs light, you can assume that the battery is dead and
must be replaced.
The number of LEDs that light corresponds to remaining
battery life. If all eight LEDs light, that means the battery is
fully charged. If only a few light, the battery is weak and
should be replaced soon.
A few seconds after the LEDs light, they will go dark. If most
of the LEDs lit up at power on, the HIGH LED at upper right
will light and remain lit. If only a few LEDs lit up, the HIGH
light will blink, indicating a weak battery that should be
replaced.
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