Alza discounted a great smart thermometer with a display! It costs 629 CZK and supports Matter

If you want to keep track of temperature and humidity in your home and are not keen on opening your phone to check every single reading, Alza.cz is currently offering the SwitchBot Meter Pro for 629 CZK with discount code ALZADNY30. The original price was 899 CZK, so the discount is 30%. It’s a thermometer and hygrometer with a large display that works independently via Bluetooth, but with a hub (e.g., SwitchBot Hub Mini or a Matter-compatible device), you gain notifications, voice control, and automations.

What is it and what is it for?

The SwitchBot Meter Pro is a thermometer and hygrometer with a 2.5″ display that shows current temperature, humidity, and even atmospheric pressure. It primarily works via Bluetooth – you connect it to your phone, and in the SwitchBot app, you can see the history of measured data. It measures temperature in the range of 0–50 °C with an accuracy of ±0.5 °C and humidity from 0–95% with an accuracy of ±3%. This is decent accuracy, comparable to professional sensors at a significantly higher price.

The device supports the Matter protocol, meaning you can connect it with most smart home systems – Google Home, Amazon Alexa, Apple HomeKit, or Samsung SmartThings. If you have a Samsung TV with Matter or another Matter hub at home, the Meter Pro will connect without issues.

Power is provided by two AA batteries with a battery life of up to 12 months. When the battery level drops to 20%, both the display and the app will notify you. Data is stored locally for 68 days and in the app for up to 2 years, providing you with a long-term history.

Who is this sensor suitable for?

The SwitchBot Meter Pro makes sense for various situations. If you grow orchids, cacti, or other humidity-sensitive plants, this sensor will show you whether the room is too dry or too humid. It’s also suitable for a child’s room – if humidity drops below 40%, the display will alert you, and you can turn on a humidifier. Allergy sufferers will appreciate humidity monitoring due to dust mites, which multiply at humidity levels above 60%.

Another use is in the basement, garage, or wine cellar – you can monitor whether it’s too humid (risk of mold) or too dry. Thanks to data export, you can download and analyze long-term trends. This is useful, for example, when assessing whether your dehumidifier is working or if it makes sense to invest in better insulation.

If you already have a SwitchBot Hub Mini or another Matter hub at home, you’ll also get push notifications – for example, “humidity in the children’s room has dropped below 35%” – and the ability to trigger automations. For instance, “when the temperature exceeds 28 °C, turn on the air conditioning” or “when humidity drops below 40%, turn on the humidifier”.

Bluetooth, Matter, and when you need a hub

The crucial question: do you need a hub? It depends on what you want. If seeing the current temperature and humidity on the display and occasionally checking the app on your phone via Bluetooth is enough for you, you don’t need a hub. The SwitchBot Meter Pro works independently and stores data locally for 68 days.

However, if you want push notifications (alerts for changes), voice control, or a 12-hour weather forecast, a hub is necessary. You can use either the original SwitchBot Hub Mini or any Matter-compatible hub – such as a Samsung TV with Matter, Google Nest Hub, or Amazon Echo with Matter support.

Design and placement

The SwitchBot Meter Pro has compact dimensions of 11.2 × 5 × 3.3 cm and weighs 150 g. The display is readable even from a distance, which you’ll appreciate when you want to quickly check the temperature without having to pull out your phone. You can place the device on a table, shelf, or hang it on the wall – the package includes a magnetic holder and the option for screw mounting.

The white color and minimalist design will fit into most interiors. Compared to cheaper thermometers, the Meter Pro has a significantly larger display (2.5″), so you can read the values even from three meters away.

App and data export

The SwitchBot app is available on both Android and iOS. In the app, you can see a temperature and humidity graph for the last 68 days (without a hub) or up to 2 years (with a hub). You can export data to a CSV file and analyze it in Excel or Google Sheets.

You can set threshold values – for example, “notify me when humidity drops below 35%” or “when the temperature exceeds 30 °C”. However, these notifications only work with a hub; without it, alerts will not be displayed.

Verdict: a precise sensor with Matter for 629 CZK

At 629 CZK with the discount code ALZADNY30, the SwitchBot Meter Pro is an attractive offer for anyone who wants to monitor temperature and humidity with an accuracy of ±0.5 °C.

If you already have a Matter hub at home (Samsung TV, Google Nest, Amazon Echo), you’ll also get notifications and automations. If you don’t have a hub, the sensor works independently via Bluetooth – you see data on the display and in the app, just without push notifications.

The one-year battery life on two AA batteries is solid, and 68 days of local storage will cover you even if you disconnect from the internet for a month. And you’ll appreciate data export if you’re dealing with mold, condensation, or optimal conditions for plants.

Do you monitor temperature and humidity at home? How do you manage it?