RuuviTag Pro 3in1 Wireless Bluetooth Temperature (°C/°F), Air Humidity and Motion Sensor. Alerts & History. Free Android/iOS apps. Integrates with Victron, Homey, and Home Assistant. Made in Europe.

I placed the sensor at the upper rear of the sauna, and verified the accuracy using a Flir thermal imager and analog temperature gauge. If you look at the photo with the thermal imager, you’ll notice heat can vary quite-a-bit around the sensor (white/red is hot to cooler blue). IMO, concerning other reviews that use a Flir to measure the accuracy, it’s not useful to measure the surface temperature of the device, but the surfaces in close proximity of it. The hard plastic shell of the device will run at a different temperature than cedar wood, (which the sauna surface is in my case). The ruling is still out on effectively measuring humidity. Concerning the Hygrometer (humidity) aspect of the device, you would need to have the device in the general area of your body to get a accurate/useful reading, and that bit is not as important as temperature is. I can get that reading from the analog gauge (see photos). Setup in the Ruuvi app was very straightforward and had acceptable range between the sauna and house, which is just a few feet outside in the rear yard. Anyone who has a sauna knows how important it is to open the door only once while getting in to use it, otherwise loose 5-10min of heating checking the temperature gauge that is inside the sauna. For my purposes, I see no need for improvement. I can say this guy works in temperatures up to at least 190° which makes it a good buy for saunas.

Installed in my rv fridge to keep an eye on fridge temps and set alarms if needed. Bluetooth'ed to my victron control panel and works great, East to read and monitor inside fridge temps without opening the door.

Some people say that it doesn’t work in their refrigerator or freezer. A refrigerator forms a good faraday shield and blocks bluetooth. An unrealistic expectation is not a failure of a device.

These work great, although they are expensive. Easy to setup. Used one for indoor temp and one for outdoor temp at my off-grid cabin in the woods. Connected via the Cerbo GX on my Victron solar system.

Works perfectly in my sauna downstairs

We have 3 of these Ruuvi Tags in our trailer to monitor interior, a storage compartment and refrigerator temps and they work connected to out Victron Cerbo to monitor remotely. Battery life.is excellent and easily replaceable.

I have several of these for monitoring everything from my fridgerator to my RV garage. Very accurate and reliable that also integrate with my Victron solar installment in my RV.

Cool but not worth the high price. Also being installed in a sauna is a bummer because the bluetooth signal struggles to get past the foil vapor barrier, so you have to be in the sauna for the bluetooth to work which defeats the purpose.

Tolles Produkt. Einer dient als Außentemperatursensor, der and er für den Maschinenraum auf meinem Segelboot 1A. Werte werden via Bluetooth in Signalk eingelesen.

Perfecto. Cumple para lo que lo compre para monotorizar temperaturas de -20grados.

Utilissimo in posizioni difficili, come all'esterno o dentro freezers

Do 5stelle

Tolles Teil. Liegt im Gefrierfach und das Signal kommt ausgezeichnet nach draußen. Anzeige in der Ruuvi App oder über Victron Cerbo. Funktioniert einwandfrei parallel. Werde weitere Sensoren bestellen.