RuuviTag 4in1 Wireless Bluetooth Temperature Humidity Pressure Motion

In this review of the RuuviTag 4in1 Wireless Bluetooth Sensor the bottom line is simple: this compact sensor is best for anyone who needs reliable indoor or outdoor environmental monitoring with easy integration into home systems. The reviewer found the device delivers accurate temperature and humidity readings and adds useful air pressure and motion data, all in a rugged IP67 housing. The device is straightforward to set up with the free Android and iOS apps, and it works well for DIY home automation thanks to native compatibility with Home Assistant, Homey and Victron systems.

Key Features

• Accurate temperature: The thermometer reports temperature to about 0.2 C accuracy in typical room conditions, useful for climate-sensitive spaces.
• Reliable humidity readings: The hygrometer provides roughly 2%RH accuracy between 20 and 80% for tracking humidity in cellars, greenhouses or living rooms.
• Air pressure sensing: Built-in pressure measurements help with local weather trends and barometric logging for environmental analysis.
• Motion sensing: The integrated motion sensor enables basic activity or tamper detection without adding a separate device.
• Robust build and battery life: IP67-rated housing and multi-month battery life make it suitable for indoor or protected outdoor placement.
• Open integrations and remote options: Works with Home Assistant, Homey and Victron and can be monitored remotely with a Ruuvi Gateway.

Who It's For

The RuuviTag suits hobbyists, home automators, and small business owners who want accurate environmental telemetry and easy integration with existing smart platforms. Its combination of temperature, humidity, pressure and motion in one small package is especially useful for greenhouses, server cabinets, wine cellars and boat or RV cabins.

Users who need certified industrial sensors or very long-term on-device logging beyond the internal memory window should look elsewhere, or consider pairing this tag with Ruuvi Gateway for remote monitoring and extended access to stored data.

Pros & Cons

Pros

• Compact multi-sensor package that measures temperature, humidity, air pressure and motion in one device.
• Good typical accuracy: about 0.2 C for temperature and 2%RH for humidity in the common ranges.
• IP67 housing and months of battery life make it suitable for many indoor and outdoor situations.
• Native integration with Home Assistant, Homey and Victron plus free mobile apps simplifies automation and monitoring.

Cons

• Internal memory stores recent data for about 10 days at 5-minute intervals, so long-term local logging without a gateway is limited.

Specifications

Measured values	Temperature (C/F), Air Humidity, Air Pressure, Motion
Temperature accuracy	Typical 0.2 C in room temperature
Humidity accuracy	Typical 2%RH at 20...80%RH
Operating temperature	-20 C to +70 C (-4F to 158F)
Ingress protection	IP67 housing
Internal memory	10 days at 5 minute intervals
Integrations	Home Assistant, Homey, Victron; remote monitoring with Ruuvi Gateway

Our Verdict

The RuuviTag 4in1 is a practical, well-built sensor for users who want accurate environmental data and easy smart home integration. It offers strong value for hobbyists and small installations that benefit from temperature, humidity, pressure and motion in a single IP67 device, especially when combined with the free apps or a Ruuvi Gateway for remote access.

Frequently Asked Questions

Does it work with Home Assistant?
Yes. The RuuviTag integrates with Home Assistant and can be connected directly via Bluetooth or accessed through a Ruuvi Gateway for remote monitoring.

How long does the battery last?
Typical battery life is in the months range; actual life depends on reporting interval and environmental conditions.

Can it be used outdoors?
Yes. The IP67 housing allows protected outdoor placement, but extreme exposure and submersion should be avoided.