On the product:
Digital temperature and humidity meter

The meter is portable and small and performs temperature and humidity samples in real time
Comes with a 1.45 inch illuminated screen and reads samples at a rate of 2.5 samples per second
The meter can work with degrees Celsius or Fahrenheit depending on the need

Product features:

Digital hygrometer and temperature meter
Suitable for temperatures from minus 30 to 70 degrees Celsius
Humidity percentage range: 0% – 100% RH
High precision
Maximum and minimum measurement
Illuminated rest digital monitor
Works on 6F22 9V battery
Weight: 94 grams
Dimensions: 15.3X5.3X3.5 cm
humidity range： 0%～100%RH
range resolution precision
0%～20%RH 0.1 4.5%
20%～80%RH 3.0%
80%～100%RH 4.5%
temperature range: -30℃～70℃
range resolution precision
-30℃～0℃ 0.1℃/0.2℉ 1.0℃
0℃～70℃ 0.5℃
-22℉～32℉ 1.8℉
32℉～158℉ 0.9℉
size 152*35.5*52.5mm
Weight: 92.7g
To download a user guide להורדת מדריך משתמש