Option to select thermocouple K/J - UT320D is a dual input thermometer that accepts Type k and J thermocouple Wide measurement range - with Maximum/minimum/average measurement option LCD backlight - Long press 'Hold BL' button to switch on/off backlight Temperature display - Long press 'T1 - T2' button to select unit ?C/?F. Place thermocouple on the probe to measure Difference measurement: Short press 'T1 - T2' button to check temperature difference