> 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/products/editor-8/use/power-supply.md).

# Power supply

The TX T\&H AMB (older generation) offers a power supply mode using **Battery**; use the supplied battery for optimal battery life.

## First commissioning

#### Battery

* First, unscrew the 4 screws on the front of the sensor.
* Powering on the TX T\&H AMB (older generation) is done by plugging in the Molex connector.

## Battery replacement

* Disconnect the Molex connector of the used battery from the PCB connector.
* Unscrew the screws of the battery retaining clip and remove it.
* Remove the used battery from its slot and insert the new one.
* Put the battery retaining clip back in place and lock it using the two screws provided for this purpose.
* Reconnect the Molex connector of the new battery to the PCB.
* The sensor restarts.

{% hint style="danger" %}
Be careful not to **touch** the **components** on the PCB with your fingers when handling the battery connector.
{% endhint %}

{% hint style="info" %}
Do not close the sensor immediately so you can check the LED array indicating its activation on the LoRa Easy or LoRaWAN network.
{% endhint %}


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