Excelvan Weather station PDF manual (AOK-5019 model version 02/2016) and mini-review

I own a home weather station (not really) called Excelvan Weather Station like the one on the picture (AOK-5019 version 02/2016). It is pretty good  weather station for domestic usage offering basic information (temrature, presure, humidity) from inside and outside units.

Here are some of its features

1. Measure & Display indoor & outdoor temperature and humidity with trend, built-in barometer with barometric pressure and history display. Temperature Measuring Range: 0 ~ 50°C (indoor) , -20 ~ 60°C (outdoor).
2. Selectable channel:1/2/3, gives you the option of polling 3 outdoor sensors with one weather station.
3. Setting for weather icon, height above sea level and barometric pressure. Five weather icons display: sunny, partly sunny, cloudy, rainy, storm.
4. Dual alarm setting with 3 selectable channels temperature alert function daily alarms and snooze function.
5. Large LCD display will simultaneous display of time, date, indoor &outdoor temperature, humidity, barometric pressure, day of the week(available in 7 different languages: German, English, Italian, French, Dutch, Spanish, Danish).
6. Calculate 150 European cities’ sunrise/sunset and moon rise/moon set time.

After having it for about one year I should mention few things not found in the specs. You

Precision

The precision of the sensors is quite good. I 've compared the data with other thermometers/barometers and hydrometers and are quite similar. I ve also compared its readings with a local (nearby) professional weather station and are also similar. The two units (indoor and outdoor) are not calibrated 100%. Heaving them side by side (in the same room) you