The attic is a challenging space because its temperature and humidity can change rapidly. On summer days, the attic can reach temperatures of up to 40 °C (104 °F), while in winter it can be freezing. The temperature directly affects the relative air humidity. It makes sense to monitor the temperature and humidity of the attic to avoid damage due to moisture. In a space with low occupancy, slow-onset damage is not easily noticed.
Moisture damage and mould can significantly reduce indoor air quality. Mould causes allergic symptoms for most people and high humidity can damage the building’s structure. There is no precise optimum temperature or humidity for the attic, but mould can start to grow at 70% relative humidity, depending on the species. Mould needs temperatures between 5 °C and 25 °C to grow. (40 °F – 77 °F). To avoid mould damage, make sure that the relative humidity of your attic does not exceed 70% for prolonged periods of time. If there are water pipes running through the attic, the temperature must not drop below zero (freezing temperatures). If you store any temperature- or humidity-sensitive products in your attic, consider the optimal conditions for storing them.
RuuviTag allows you to conveniently monitor temperature and humidity with your phone. With the sensor’s long Bluetooth range, you can read the conditions from the upper levels while being in other areas of your house and vice versa. Ruuvi’s sensors work with the free Ruuvi application, where you’ll find practical functionality for monitoring different conditions. Alerts will tell you about adverse changes in your attic and graphs will show you long-term trends. With the Ruuvi Gateway, you can view conditions even when you’re not at home, and also share the sensor’s data with the whole family.
Install the RuuviTag in the attic, either near the centre of the attic or alternatively where you suspect potential problems, such as near water pipes. You can also place several sensors around the attic if you want to get more accurate data from a larger attic. The RuuviTag 4in1 and the RuuviTag Pro 3in1 are suitable for moisture monitoring.
Get a wireless hygrometer to your attic
Ensure proper conditions inside an attic effortlessly with a 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.
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RuuviTag Sensor (4in1)
| 5 star | 94% | |
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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 |
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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.
perfect to log my boat conditions when i’m away, and check pressure variations in real time when i sail