Relative Zero Mode - Elma 805s Bedienungsanleitung

Elma 805/807 Page 38
RELATIVE ZERO MODE
Relative zero mode allows the user to offset the meter consecutive
measurements with the displaying reading as the reference value. The display will
now show readings relative to the stored reference value. That is, display =
reading - stored value. Press the button momentarily to activate or to exit

relative zero mode.

BACKLIGHTED DISPLAY (ELMA 807S ONLY)
Press the SELECT button for 1 second or more to turn on or off the display
backlight function.