SEFRAM 7314 Notice D'utilisation page 37

Note – If the Meter idles for more than 10 minutes, the Meter
automatically turns the power off. When this happens, the
LCD displaying-state of the Meter is saved. The Meter can be
turned back on by pushing any button, the LCD displays the
saved state. Pushing Hold button to disables the hold state.
Any button pressed or rotary change resets the time of Auto-
Power-OFF.
Disable Auto Power Off
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