SEFRAM MW 3360 Notice D'utilisation page 22

Hz
Zero
 REL: Meter save the displayed offset
value after press the ZERO button first
time. The LCD is displaying the relative
value.
 REL (flashing): Meter saved the offset
value. Present value is displaying
 Normal : Press and hold ZERO for ≧2
sec to return to normal operation and
cancel the offset value.
22