Table 3. Components
Display
Buttons
Thermocouple T1 input
Thermocouple T2 input (UT323 and UT325 only)
USB Port
SIGN Port - Over Limit Signal Output (UT323 and UT325 only)
NTC
Battery Door
9V battery (6F22 )
1
2
3
4
5
6
7
8
9
Model UT321/322/323/325: OPERATING MANUAL
9
