Measure temperature
Monitoring outside air temperature has never been so accurate and yet so easy at the same time. A sensor collecting real time data from your own backyard gives more accurate information about your neighbourhood’s weather than the nearest weather station could provide.
Measure humidity
In addition to temperature, you might be interested in outdoor humidity when deciding whether to air your house or dry your laundry outdoors, for example. Depending on the temperature the normal relative humidity is around 205 to 40% in the winter and 50% to 70% during summer months.
Measure air pressure
The barometric pressure sensor is a valuable addition to any weather station. By monitoring the air pressure graph in the Ruuvi Station application, you will be able to learn how changes in pressure affect the weather. A sudden drop in air pressure often implies wind, rain, or thunder. You can set alerts for changes in air pressure and thus be able to react to weather phenomena on time, for example by securing outdoor furniture, or closing your windows before leaving the house.
Build a wireless weather station
Placing several RuuviTags in your yard will deliver the most accurate information about current weather conditions and possible changes. We suggest placing the sensor in the shade, unless it is a sunny outdoor lounge that you want to monitor. However, we do not recommend placing black RuuviTag Pro in direct sunlight!
For most accurate measurements, place one tag in the front yard, second one in the back, and the third in the lounge area. If a sensor is right under the eaves, we suggest placing another sensor a bit further away from the building. This is to make sure that any air escaping through the doors and windows of your home does not affect the measurements.
What is the best outdoor thermometer?
Both RuuviTag and RuuviTag Pro perform well indoors and outdoors. There are some differences in the tags that can be compared on our product pages.
Weatherproof and waterproof wireless outdoor thermometer
RuuviTag and RuuviTag Pro (3in1) both measure temperature and humidity. RuuviTag also measures air pressure. Sensors are splash proof and do not get affected by a little rain as long as the breathable membrane does not absorb water. This can happen if a droplet stays on the surface of the membrane for too long. We suggest placing these tags under a canopy, just in case.
If you are only interested in the outdoor temperature, then the completely waterproof RuuviTag Pro (2in1) is a safe choice. It can be submerged as well, and because of these features the tag does not have a breathable hole to measure humidity.
Now that the sensors are placed correctly, what’s next?
Once the RuuviTags are placed, download the Ruuvi Station application on your mobile device and sync the sensors. You will see the measurements immediately. The app will collect weather data based on the measurements, and soon you will be able to analyse easy-to-read graphs and note trends in your local weather conditions.
Sensors currently store 10 days worth of data that you are able to sync to a mobile device. If you happen to go out of range of the Bluetooth sensor, you can sync the data from the last 10 days when you return.
Monitor your wireless weather station remotely
If you are interested in observing several sensors remotely and save long term data, we recommend a Ruuvi Gateway router to accompany the sensors. The Gateway sends all data to a Cloud service. Internet connection and the Cloud storage bring various other features as well, the most interesting of which is the possibility to share sensor data with several users. With the Ruuvi Gateway you will get a more secure and uninterrupted connection to the sensors than with a mobile device only. The Cloud service also enables safe email alerts.
Maintenance free for a couple of years
RuuviTags have a long-lasting battery life (approximately two years). It is easy to replace it yourself. You can see the battery status of your sensor in the Ruuvi Station app so you know when to purchase a spare one. It is recommended to use Ruuvi’s custom-made high quality batteries that operate in the same wide temperature range as our RuuviTags.
Buy Wireless Environmental Sensor
Build your own DIY weather station with RuuviTag
39,90€
Ruuvi is based in Finland. If you’re an EU consumer, VAT is included. If you’re a non-EU customer, you don't pay VAT. If you're an EU business, insert your VAT ID at checkout.
In stock
RuuviTag Sensor (4in1)
| 5 stars | 94% | |
| 4 stars | 6% | |
| 3 stars | 0% | |
| 2 stars | 0% | |
| 1 star | 0% |
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RuuviTag Sensor (4in1)
| Quantity | Unit Price(€) |
|---|---|
| 1 | 39,90 |
| 2 | 37,40 |
| 3-5 | 36,90 |
| 6-8 | 35,90 |
| 9-12 | 34,90 |
| 13-25 | 33,90 |
| 26-99 | 32,90 |
Are you looking for bigger quantities? Contact us for pricing.
⭐⭐⭐⭐⭐ Excellent sensors for RV monitoring and Victron VRM integration
I am extremely satisfied with my Ruuvi sensors.
I use several of them in different locations inside my motorhome: in the refrigerator, battery compartment, living area, kitchen area and other positions. Installation was very simple and the sensors have been working flawlessly from day one.
What impressed me most is the excellent integration with the Victron ecosystem. Through Victron VRM I can monitor all sensor data remotely 24/7, which is incredibly useful when living and travelling off-grid.
The accuracy is outstanding. The pressure readings of different sensors are almost identical, showing only minimal differences, which gives me great confidence in the quality of the measurements. Temperature and humidity readings have also proven to be very reliable.
I have even used the sensors to evaluate the performance of a portable compressor cooler. Thanks to the precise temperature logging, I was able to see that the cooler dropped from 20°C to 0°C in about 30 minutes and reached -20°C in less than an hour. Without Ruuvi sensors, such testing would have been much more difficult.
Battery life has been excellent, setup is easy, and the overall user experience is outstanding.
For anyone using Victron equipment, RVs, boats, off-grid systems, refrigerators, freezers or environmental monitoring, I can highly recommend Ruuvi sensors.
Excellent!
After integrating four RuuviTags into my Victron Cerbo GX / VRM system in our Rapido motorhome, I can honestly say they have transformed the way I monitor the vehicle.
The setup now provides live temperature, humidity and pressure monitoring directly inside the VRM portal, allowing me to monitor critical areas including:
Battery Box
Orion DC-DC Charger Compartment
Engel Fridge
Main Rapido Fridge Area
What impressed me most was how seamlessly the RuuviTags integrated with the Cerbo GX via Bluetooth. Once connected, the data appears natively inside VRM and can be used for real alarms and automation.
I have now configured:
High temperature alarms
Low temperature alarms
VRM email notifications
Relay-triggered audible siren alarms
The system is now capable of warning me immediately if:
the lithium battery compartment gets dangerously cold
the battery box overheats
the Orion compartment becomes too hot
ventilation or airflow problems occur
The accuracy and stability of the readings have been excellent. The tags update reliably and provide a very clear picture of what is happening inside the motorhome.
One of the major advantages is that the system no longer relies on older digital-input alarm methods or complex workarounds. The RuuviTag + Cerbo GX combination feels like a modern, professional-grade monitoring solution.
The compact size, long battery life and wireless operation make installation extremely easy. No extra wiring was required for the sensors themselves.
For anyone building a Victron-based off-grid system, especially in a motorhome, caravan, marine or lithium battery installation, I would highly recommend RuuviTags.
They add a level of visibility and protection that is difficult to achieve any other way at this price point.