Ruuvi Sensor Is Not Starting
First run
To activate the Ruuvi sensor, simply remove the plastic strip between the battery and the battery clip. You don’t need to open the protective case to do this. If the case is opened, the indicator LED will be activated when the sensor powers on. If the LED remains off, replace the battery.
When changing the battery
Powering a Ruuvi Sensor is automatic: inserting the provided button cell (CR2477, CR2477T) battery, will power up the sensor.
Check out our video guide on how to change the battery:
https://www.youtube.com/watch?v=BH8UcO0VerQ
The startup indicator lights are defined by the firmware version currently in use. Detailed information about changing the battery to your Ruuvi Sensor can be found here.
Ruuvi sensor is not visible or not updating to the app
Open the RuuviTag case and check if LED indicator is active (very dim green light)
If the indicator LED blinks approximately once every 2.5 seconds, the device is functioning normally and transmitting data. You can also verify the battery voltage in the Ruuvi Station app under the sensor settings page in the “More info” section.
Other apps or Bluetooth devices may interfere with Bluetooth functionality
Some applications and Bluetooth devices may “take over” the Bluetooth service or block its usage. To resolve this, disable other Bluetooth devices connected to your device. Known issues often involve Suunto Smart Watches.
The Ruuvi Station iOS app requires the option to pair and use background scan to activate Bluetooth alerts and record measurements while the app runs minimized in the background.
Check permissions
Ruuvi Station mobile apps require a number of permissions in order to collect data from your Ruuvi sensors.
Check power optimisation features
Disable power optimization features in phone settings for Ruuvi Station. Check our guide for more information.
Nearby permission is not allowed
Ruuvi Station app cannot use Bluetooth service if Nearby Devices permission is not enabled. The Nearby Device permission allows an app to find, connect to and determine the relative position of nearby devices by using Bluetooth.
Bluetooth is disabled
Ruuvi Sensors use Bluetooth (BLE) to broadcast data. Ensure that Bluetooth is enabled on your device. Connecting to Ruuvi Sensors is not possible on your device’s Bluetooth settings page, even though sensors are visible on this page.
Ruuvi Sensor firmware
To ensure optimal performance, make sure that your Ruuvi sensor firmware is up to date. You can view the current firmware version and update it to the latest one in the Ruuvi Station mobile app under the sensor settings page. You can also check for available updates to the standard Ruuvi firmware for your sensor on this page.
If your mobile device supports NFC, you can view sensor-related information on the “Add a new sensor” page in the Ruuvi Station app by tapping your mobile device against the Ruuvi sensor.
Refer to https://ruuvi.com/software-update for more information regarding firmware.
Ruuvi Sensor signal is out of range
Move the Ruuvi Sensor closer to your mobile device and ensure there are no obstacles between them that could block the Bluetooth signal. If you are collecting measurement data from your Ruuvi sensor via the Ruuvi Gateway router, try moving the sensor closer to the router.
For tips on improving wireless signal strength with Ruuvi products, refer to our support article.
RuuviTag sensor battery life is shorter than expected
The RuuviTag sensor is powered by a coin cell battery. In some cases, battery performance may be suboptimal, leading to reduced battery life or sensor reboots.
In such cases, it is recommended to check the condition of your Ruuvi sensor, replace the coin cell battery with a new one, and adjust its installation location.
If the issue persists, please contact our support team at support@ruuvi.com. Include a detailed description of the problem and close-up photos of both sides of the RuuviTag circuit board to assist with troubleshooting.
Resetting the Ruuvi Sensors
Resetting your sensor clears the memory of the Ruuvi Sensor. In the standard Ruuvi firmware, this memory includes the measurement history stored on your RuuviTag. Generally, resetting your sensor is not necessary.
To reset your RuuviTag sensor, remove the coin cell battery, then reinsert it. The sensor will restart automatically.