MostraLog is a precise data logger for long-term recording of relative humidity and air temperature. Particularly noteworthy are the above-average measurement accuracy, as well as the longevity of the meter. The MostraLog displays the values on a large LCD and writes them on an SD card. The recording is configured on the PC with the free MOSTRALOG software, the display can be controlled either via the built-in button or via IR remote control.

Thanks to an intelligent calibration / adjustment mode, age-related measurement inaccuracy can be adjusted.

•Accuracy humidity: ± 2% RH from 10 to 90% RH

•Accuracy Temperature: ± 0.5 ° C from 5 to 45 ° C

•Data storage on microSD card 2 GB

•Batteries: 2 x AAA microcells, life up to 2.5 years

•External humidity sensor can be connected

•Humidity sensors readjustable

•Free Software for Windows (Download)

•USB interface with standard mini USB socket

•Read out via USB or via the microSD card

•Programming via USB, paperclip button or optional IR remote control

•Alarm display on display, min./max. Display

•Alarm switch contact

•Simple weather data import via CSV file

•Wall mounting with safety mechanism

•The free software can be downloaded

MOSTRALOG software for configuration and data analysis

•Communication with the Mostralog temperature and humidity logger via USB cable

•Setting the recording rate, alarm limits, units, etc.

•Reading and visualizing the data

•Export of data as CSV


•Mostralog data logger

•Windows evaluation software (free download)

•Batteries (2xAAA)

•microSD card

•operation manual

Optional accessories

•remote Control

•external sensor incl. 2 m or 5 m cable

•1.8 m alarm cable with open ends

•Calibration kit


Technical specifications




Temperature measuring range

-18°C to +70°C (0°F to 158°F)

Temperature accuracy


Temperature resolution

0.1°C (0.2°F)

Humidity measuring range

0 to 100% RH

Humidity accuracy

±2% RH (10 to 90% RH )

Humidity resolution

0.1% RH

Operating range

-18°C to +70 °C (0°F to 158°F)/ 0% to 100% RH


2 GB microSD-card

Measuring interval

5 to 120 min in 5 min intervals

Start options



Min-/Max limits, low battery, optional alarm cable 1.8 m

Alarm output

Low side switch, digital signal (active low)

Data transfer

USB or microSD-card


2 x standard AAA , replaceable

Battery life

Up to 2 years at 23°C (73°F)


ABS , black or white


58 x 47 x 21 mm (2,3 x 1,8 x 0,8 inch)


57 g (2 oz)

External sensor

Cable 2 m or 5 m; sensor head Ø 8 mm