Using the Handheld Infrared Thermometer 2
2.3.7 Using the Alarm Functions
HAL
°F
The thermometer provides audible and visible alarm indications.
•To set the high alarm value:
1.Pull the trigger. Then press and hold the 
key until the High Alarm Display Mode (HAL) appears.
2.Press the 
key to increment the high alarm value. Press
the 
key to decrement the high alarm value.
3.Press the 
key to enable the high alarm function. The
icon appears.
If the temperature exceeds the high alarm setpoint,
you will hear a beep and the 
icon on the display flashes.
4.To disable the high alarm, press the 
key again,
and the 
icon disappears.
NOTE
If you are not in High Alarm Display Mode (HAL) when
the high alarm goes off, you must press the 
key to get into the High Alarm Display Mode. Then press the
key to disable the high alarm.
NOTE
The high alarm setpoint does not change when the thermometer is turned off. However, when the batteries are replaced, it is reset to the default value as follows:
OS530HR:250°F
OS531:750°F
OS530L, OS532, OS533: 1000°F
OS534:1600°F
OS523:2500°F
OS524:4500°F
