Beta 1760TMC 600 Instructions For Use Manual page 73

Press the up button to increase the threshold for high temperature
alarms; press and hold to increase continuously.
Press the down button to decrease the threshold for high
temperature alarms; press and hold to decrease continuously.
Press the OK confirmation / menu button, to open or close the start
button open this button to indicate that, if the measured object is above
the set maximum temperature threshold, the instrument will sound an
alarm, if it is not closed. no alarm sound will be heard.
Press the back / on button to exit the high alarm interface and return
to the alarm options interface.
If the low alarm option is selected, enter the alarm interface as shown
below:
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