> For the complete documentation index, see [llms.txt](https://enless.gitbook.io/centre-aide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enless.gitbook.io/centre-aide/guides-installation/documentation-en/sensors/editor-16/use/power-supply.md).

# Power supply

TX CONTACT: power supply

The TX CONTACT offers a power mode using **Battery**; use the supplied battery for optimal battery life.

## Initial setup

#### Battery

{% columns %}
{% column %}

<div data-with-frame="true"><figure><img src="https://1715332350-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3HoPKoOlgG9Qj4E6fu0w%2Fuploads%2FNd4Rv9VhIXB3tEPuI1LJ%2FAlimentation%20capteurs.png?alt=media&amp;token=12af4cdd-63de-4ad2-a5f0-426429355387" alt=""><figcaption></figcaption></figure></div>
{% endcolumn %}

{% column %}

1. First, unscrew the 4 screws on the front of the sensor.
2. The TX CONTACT is powered on by plugging in the Molex connector.
   {% endcolumn %}
   {% endcolumns %}

## Replacing the battery

{% columns %}
{% column %}

<div data-with-frame="true"><figure><img src="https://1715332350-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3HoPKoOlgG9Qj4E6fu0w%2Fuploads%2FnkmN6mENhNEUI42r6js5%2FProduits_Atouts_Card_Autonomie.png?alt=media&amp;token=4c7fbb80-afd8-40e1-8584-b260d3514d7c" alt=""><figcaption></figcaption></figure></div>
{% endcolumn %}

{% column %}

1. Disconnect the Molex connector of the used battery from the PCB connector.
2. Unscrew the screws holding the battery retaining clip and remove it.
3. Remove the used battery from its compartment and insert the new one.
4. Replace the battery retaining clip and secure it using the two screws provided.
5. Reconnect the Molex connector of the new battery to the PCB.
6. The sensor restarts.
   {% endcolumn %}
   {% endcolumns %}

{% hint style="info" %}
Do not close the sensor right away; check the LEDs indicating that it is connected to the LoRa Easy or LoRaWAN network.
{% endhint %}

{% hint style="danger" %}
Do not dispose of the battery in a fire.\
Do not short-circuit the battery.\
Do not crush the battery.
{% endhint %}


---

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