Alarm Operation; Key Lock Function - SATO SK-L750 Series Instruction Manual

6. Alarm operation

If the measured value exceeds or falls from the upper or lower alarm setting
value, the indicators of "ALM" and "Hi" or "Lo" will flash and the alarm light will
be lit. Then, when the measured value falls back within the range of the setting
values, the indicator and the light go off.
To turn off alarm actions, press the MODE key while holding the SET key.
Note: The alarm does not work if the unit is not measuring,
that is, when the unit is in standby for preset start or
when the unit is in a setting mode.
The alarm setting is turned off and the set value
returns to the default when the probe is disconnected.

7. Key lock function

The datalogger has a function to prevent misoperation while in logging or in
standby for preset start.
To enable it, press SET key for two seconds when in measurement mode or in
standby for preset start. The key lock indicator will then be lit on the display and
the operation of keys other than the SET key will be disabled.
To unlock it, press the SET key again for two seconds.
8. AC Adapter
We offer a dedicated AC adapter (Catalog No. 8229-50). If you use an AC
adapter other than this, select the one with 1A/5VDC, USB Mini-B output.