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When both the low and high alarm limits are turned on as indicated by
HI/LO
on the display, the green LED will turn on and "OK" will appear on
the display, indicating that the measured temperature value is normal.
When the "HI/LO" limit alarm function is turned on and the measured
temperature value is within the high and low alarm limit range, the green
LED lights up and the OK indicator is displayed, indicating that the
measured temperature value is normal.
1. High/Low alarms on.
2. High alarm on.
3. Low alarm on.
4. No alarm set.
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