Portable multi-function meter, hygrometer and thermometer
-20 - 60 °C, 0 - 100 %RH, RS 232 | DTM 321 / DTM 322 Tecpel Co., Ltd.

DTM-321: Dual Input.Temperature and humdity meter.
DTM-322: Dual Input + Data Recorder.+RS-232 interface (optional USB cable)

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.
ÄREL 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.
Optional USB Cable