Brymen BM839 User Manual page 11

10
A, mA, µA Current functions
Press the SELECT button momentarily to toggle the DC or AC of the subject
+Hz
functions. Last selection will be saved as power up default for repeat measurement
convenience.
Backlighted display
Press the button for 1 second or more to toggle the LCD backlight. The backlight
will also be turned off automatically after approximate 10 minutes to extend battery life.
Auto- or Manual-ranging (ACV, DCV, Current & Ω functions only)
Press the RANGE button momentarily to select manual-ranging, and the meter will
remain in the range it was in, the LCD turns off. Press the button momentarily
again to select an adjacent range. Press and hold the button for 1 second or more to
resume auto-ranging.
Relative Zero mode
Relative-Zero allows the user to offset the meter consecutive measurements with the
main display displaying reading as the reference value. LCD " " turns on. Press the
REL button momentarily to toggle Relative-Zero mode.