Autool DM303 - Button Function

6
Button
function
Power key
A
HOLD Pause Hold / Measurement key.B
Direction
button
Select the functional items.
C
ESC Return key.D
Fn Measurement mode switch key.
E OK Enter key.
F
F2 Function keys, defined by the test function.G
ZERO / F1
Function key, quick reset setting, or
defined by test function.
H
Lighting key Press the light on / off.
I
A
B
C
D
E
H
I
G
F
Press for power-on, press for about 0.3
seconds to turn off the power when it is
on, and long press 3 seconds to reset the
instrument.