°C / °F TEMPERATURE UNIT SETTING
1 . Briefly press the trigger to turn on the display .
2 . Briefly press the SET button to toggle between °C or °F . The selected unit is saved in the thermometer memory .
REFERENCE TEMPERATURE SETTING & MEASUREMENT
Use this feature to compare the surface temperature of an object with a saved reference temperature in thermometer
memory . The comparison is visually indicated by 3 backlight colors (Blue, Green, Red) on the LCD display .
• If the scanned surface temperature is hotter than the reference temperature by more than the threshold value, the LCD
color will turn from green to red along with the fast repeating beeper sound to warn users .
• If the scanned surface temperature is colder than the reference temperature by more than the threshold value, the LCD
color will turn from green to blue along with the slow beeper sound to warn users .
• If the scanned surface temperature is within the threshold value, the LCD color will be in green,
• If Reference Temperature mode is turned off, the default LCD color is yellow .
1 . Aim the thermometer at the surface spot to be used as reference temperature and press the trigger .
2 . While pressing the trigger, briefly press the SET button . After appearance of the reference temperature value at the top
right corner of the LCD display and a short beep, the reference value is saved in thermometer memory .
3 . Set temperature Threshold Value by pressing the shift left button “
” or shift right button “
” to select the
suitable threshold value from choices of 0 .5°C (1°F), 3°C (5°F) , 5°C (10°F) or OFF to turn off the Reference Tem-
perature function .
4 . While pressing the trigger, aim and scan various surfaces and observe the change in color of LCD display .
5 . To change the reference temperature, aim at a new reference spot, press the SET button to save the new reference
temperature .
If you allow the thermometer to turn off, the saved threshold value in the memory will be erased . Repeat steps 1-4 .
6
Reference Temp.
Threshold
Threshold
Blue (Colder)
Green (Within)
Scanned Surface Temperatures and Corresponding Display Colors
Red (Hotter)
