2Using the Handheld Infrared Thermometer
LAL °F
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:
OS530HRE:250°F
OS530LE, OS532E, OS533E: 1000°F
OS534E:1600°F
OS523E:2500°F
OS524E:4500°F
•To set the low alarm value: (OS533E, OS534E, OS523E, OS524E):
1.Pull the trigger. Then press and hold the FUNC key until the Low Alarm Display Mode (LAL) appears.
2.Press the 
key to increment the low alarm value. Press the C F 
key to decrement the low alarm value.
3.Press the LOCK key to enable the low alarm function. The
icon appears.
If the temperature drops below the low alarm
setpoint, you will hear a beep and the 
icon on the display flashes.
4.To disable the low alarm, press the LOCK key again, and
the 
icon disappears.
NOTE
If you are not in Low Alarm Display Mode (LAL) when the low alarm goes off, you must press the FUNC key to get into the Low Alarm Display Mode.Then press the LOCK key to disable the low alarm.
NOTE
The low alarm setpoint does not change when the thermometer is turned off. However, when the batteries are replaced, it is reset to the default value of