- Input: external digital I2C probe for temperature, humidity and dew point (sensor are not included)
- Temperature measurement range and accuracy: according to the connected probe
- Humidity measurement range and accuracy: according to the connected probe
- GSM (GPRS) modem, (SIM card are not included)
- Measured values can be sent to the internet storage COMET Cloud
- SMS and JSON messages can be sent via GPRS data connection
- Memory: up to 500,000 values in non-cyclic mode and 350 000 in cyclic mode
- Logging interval: 1 s...24 h
- Local alarms via LED indication, on LCD screen and acoustically by built-in beeper
- Calibration certificate of manufacturer included
- Data can be transferred to PC via USB-C interface
- Ambient temperature: -20...+60 °C
- Supply: Li-Ion battery A8200, 3.6 V / 5200 mAh
- Protection class: IP67
- Warranty: 3 years
More about wireless datalogger U3121M on Comet System website [EN]
U3121M datasheet [EN]
