- DTM-321:
- Temp:-20°C ~ 60°C (-4°F ~ 140°F ); K-type: -200°C ~ 1,370°C (-328°F ~ 2,498°F); Humidity: 0 ~ 100% RH
- 4 Digit, Triple display.
- K-type Termocouple.
- Reading hold °C or °F annunciators.
- MAX, MIN. function.
- Auto power off.
- ΔREL function.
- Automatic low battery indication.
- RS-232 computer interface.
- RS-232 cable and software for Windows (Options).
- DTM-322:
- Temp:-20°C ~ 60°C (-4°F ~ 140°F ); K-type: -200°C ~ 1,370°C (-328°F ~ 2,498°F); Humidity: 0 ~ 100% RH
- Data Logging capacity 16,000 records.
- 4 Digit, Triple display.
- K-type Termocouple.
- Reading hold, °C or °F annunciators.
- MAX, MIN function.
- Auto power off.
- Time function.
- Automatic low battery indication.
- RS-232 computer interface.
- RS-232 cable and software for Windows.