General Tools and Instruments MMH800 - Manual (Page 7)

A. Calibration holes
B. Protective cover
C. Replaceable test pins
D. low/medium/highmoisture level icon (high moisture shown)
E. Wood icon
F. Building materials icon
G. Beeper enabled icon
H. Dual function button: Power on/off (press and hold for >3 seconds);
Backlight on/off (press briefly)
I. Temperature and humidity split-screen display
J. Battery compartment cover
K. Dual function button: Beeper on/off (press and hold for >3 seconds);
Moisture reading hold/release (press briefly)
L. button: Selects wood or building materials
M. button: Toggles between temperature units
N. Split metal pad sensor
O. icon: Indicates display is locked or “frozen”
P. icon: Battery charge indicator (see p. 11)
Q. Temperature/humidity sensor vent
SETUP INSTRUCTIONS
INSTALL BATTERY
To open the battery compartment, turn the meter over and use your thumb to
slide the battery compartment cover down and away from the unit. Plug a fresh
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.
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