Sper Scientific 850037 Large Display Conductivity Pen - Manual (Page 18)

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2. Press HLD again to release the
hold function.
Turning the Pen Off
1. Press
SET to turn the pen off from
Measurement Mode.
2. To turn the pen off from Setup Mode,
press SET for more than 2 seconds
to return to Measurement Mode, then
press SET again.
Auto Power Off
1. To save battery life, the pen will
automatically turn off after 20 minutes
of inactivity. To disable this function:
2. Press SET to turn the pen off.
3. Press SET and ▼ simultaneously until
“n” appears on the LCD. Release the
keys to return to Measurement Mode.
Auto-power-off is now disabled.
Note…
The auto-power-off function will be
enabled each time the pen is turned off.