> For the complete documentation index, see [llms.txt](https://docs.g-iot.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.g-iot.io/level-meter-full-device-guide-book/level-meter-handeling-information-book/level-meter-activation-procedure.md).

# Level Meter- Activation Procedure

**Before first use, low-cost trackers must be awakened from sleep mode to start measurements and send transmissions. Follow these steps:**

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<figure><img src="https://122097802-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FfEQ6KpTjmszWVWQqgcEa%2Fuploads%2FW62FAmLwPY4nf63woUQa%2Fimage.png?alt=media&amp;token=12eb1e0f-d17a-40f4-8bd3-0bd4043e89dc" alt=""><figcaption><p>LM Activation procedure steps 1-2-3</p></figcaption></figure>

1. Remove the cover from the lens
2. Shake the device several times in the ToF direction.
3. Check the LED on the back of the device.

* If Step 2 was successfully completed, the LED on the back should light up (mode "Always On").
* If the LED does not light up, repeat Step 2.

4. Verify whether the registration was successful:

* Observe the LED:

\+ The LED will blink rapidly for 3 seconds and then turn off, indicating that the device has been successfully activated.

\+ This process can take up to 3 minutes. After successful activation, the LED will not light up even if Step 2 is repeated.

* Observe the LED:

\+ If the LED turns off without blinking, the activation procedure has failed.

\+ Possible causes:

a.  An invalid network.

b.  An issue with Deutsche Telekom's gIoT Cloud platform.

{% hint style="info" %}
The installation location should be chosen so that the tracker is not exposed to strong mechanical loads, such as shock, vibration, bending and twisting forces.
{% endhint %}

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