The highly-rated Gogen ME 3900 WiFi weather station is available at a significant discount. It can be connected to your mobile phone

Weather stations with an outdoor unit, rain gauge, and anemometer usually start significantly higher. You can now get the Gogen ME 3900 WiFi on Alza for 2,889 CZK with the discount code ALZADNY15, which is more than a thousand less than the regular price. The model has been on the market for several years and has built a solid reputation during that time.

Quick summary:
✅ Makes sense if you want a complete overview of the weather at your home – wind, precipitation, UV radiation – and also the ability to monitor data on your mobile from anywhere.
⚠️ Consider if you expect plug-and-play without reading the manual, or if you need a display readable from a significant side angle.
💡 For 2,889 CZK you get professional equipment including an anemometer, rain gauge, and Wi-Fi – competitors with a similar set of sensors usually cost double.

Why is this weather station interesting?

Gogen ME 3900 WiFi is aimed at people who are not satisfied with a simple thermometer outside their window. The package includes a complete outdoor unit with a rain gauge, anemometer (measuring wind speed and direction), UV radiation sensor, and sunlight intensity sensor. All of this is complemented by an indoor station with a color LCD display, which also shows barometric pressure, moon phases, date, and time. In practice, you have everything you need for a weather overview in one place – from perceived temperature in winter to UV index in summer.

What does it measure and how does Wi-Fi work?

The outdoor unit communicates with the main station on a frequency of 868 MHz with a range of up to 100 meters. Users confirm that the signal reliably passes through several walls. The rain sensor calculates precipitation in mm per hour and per 24 hours, the anemometer measures wind speed in m/s and displays its direction. An animated weather forecast is also available directly on the display, although – as users point out – it may not always accurately reflect reality.

The key added value is Wi-Fi connectivity. Thanks to it, measured data is sent to the Ecowitt application (or Weather Underground or the Czech application Počasí Meteo), where you can view graphs for the day, week, and month – from anywhere. Additionally, up to 8 other Gogen ME SENZOR 39 sensors can be connected to the station for measuring temperature and humidity in various rooms, with their data displayed in the application.

Practical aspects: installation, power, display

The package includes the indoor station, outdoor unit, power adapter, and a short mounting pole (approx. 30–40 cm). And this is where the most common user complaint arises: the included mount is insufficient for real-world installation. Be prepared to purchase a longer pole or devise your own mounting solution – especially if you plan to install it on a roof, balcony railing, or mast. The outdoor unit’s installation itself is otherwise straightforward, but we recommend downloading the detailed PDF manual from the Gogen website – the printed manual in the package is too brief according to most reviewers.

The main station is powered by the mains, or by 3 AAA batteries (not included). However, Wi-Fi does not work on batteries, and the display has a lower backlight intensity. The outdoor unit is powered by alkaline batteries and a solar panel. As for the display, the color LCD is clear when viewed from the front or slightly from above, but viewing angles from below and from the side are weaker – this is something many reviewers mention. For most users, this doesn’t matter in practice, as they primarily monitor data via the mobile application.

What do users say?

On Alza, the Gogen ME 3900 WiFi has a rating of 4.7 out of 5 from 95 customers, 36 of whom wrote reviews, and the product is recommended by 95% of buyers. Over 2,000 units have been sold. Most often praised are the accuracy of measurements, the number of sensors for the price, and especially the connection with the Ecowitt application, which offers detailed graphs, statistics, and the ability to share data with meteorological servers. Several users have purchased the station repeatedly – one reviewer even owns three units in different locations.

Several points appear among recurring criticisms. The aforementioned poorer display viewing angles bother mainly those who have the station placed below eye level. Furthermore, users point out the support for only the 2.4 GHz Wi-Fi band – if you have a router with an active 5 GHz band, it may be necessary to temporarily disable 5 GHz during the first pairing. Occasionally, there is mention of short-term signal outages from the outdoor unit, mostly resolvable by replacing batteries with quality alkaline ones (not rechargeable). And as we mentioned, the included mounting set is insufficient for most real-world installations.

If this particular model didn’t appeal to you, but you’re looking for electronics or home accessories on sale, you can also browse the current Alza Days, where other discounted offers regularly appear.

Verdict: who is it worth it for?

If you’re interested in more than just the temperature outside your window and want a complete overview of the weather at your home – including wind, precipitation, and UV radiation – for 2,889 CZK with code ALZADNY15, you’ll be hard-pressed to find a comparably equipped alternative. The bonus of Wi-Fi, a mobile application, and a 4-year warranty after registration makes it a very solid purchase. Conversely, if you’re just looking for a simple thermometer with a hygrometer for a shelf and don’t want to deal with installing an outdoor unit, there are simpler and cheaper options.

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Do you have a weather station at home, or are you still deciding?