# Loggers list

The **Loggers** tab displays all loggers currently within the range of the Efento Gateway. For each logger, you can view: Serial number, Name, Status, Current measurements, Signal strength and information on whether measurements are buffered in the gateway’s memory (used when connectivity issues occur; the gateway will automatically resend missing data).

To access the loggers list:

1. **Open the Efento Mobile App**: launch the Efento mobile app on your mobile device and navigate to the “Nearby devices” section.
2. **Activate Configuration Mode**: when the gateway powers on, it automatically enters configuration mode (indicated by the blue LED blinking rapidly). To re-enter configuration mode later, quickly press the “PWR” button twice.
3. **Connect to the Gateway**: locate the gateway’s serial number in the app and tap it to connect.
4. **Set encryption keys:** Go to the **Loggers list** tab (list icon).

<figure><img src="/files/LEnLoyjti4SAB9fWOIud" alt="" width="375"><figcaption></figcaption></figure>

If the Efento Gateway is configured to work with Efento Cloud, it automatically synchronizes all measurements stored in its internal memory with the cloud. When a logger's measurements are being buffered in the gateway’s memory, it appears in the **Bounded devices** section. Devices that are in the gateway’s range but whose measurements are not currently being buffered are listed in the **Unbounded devices** section.\
If a device is **bounded**, the gateway will also automatically download all measurements stored in the logger's internal memory whenever the logger returns to the gateway’s range after being temporarily out of reach. This ensures that no data is lost, even if the logger was disconnected for some time.


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