# Sensor Calibration

{% hint style="info" %}
**Sensors are Calibration-ready upon delivery**

When a sensor is delivered to the customer, it is charged up and calibrated and ready for deployment. No additional settings need to be made to the device.
{% endhint %}

<figure><img src="https://2403147378-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FKqvtUjx9C2FEFg7nicAx%2Fuploads%2FpUhqY17LuDWbRizR1LsS%2Fsensor-calibration.png?alt=media&#x26;token=8a0570cb-e48a-4ddf-80c6-869b3e8141f2" alt="" width="563"><figcaption><p>Sensor calibration durations</p></figcaption></figure>

When a Wildfire Sensor has been deployed and is [charging](#charge-wildfire-sensor-1-day), the status icon is **Grey**. When it is fully-charged, the status icon changes to **Orange** to indicate the Sensor is [calibrating](#calibrate-wildfire-sensor-14-days). When calibration is complete (14-days), the status icon becomes **Green**.

## Charge Wildfire Sensor - 1 day

After the Wildfire Sensor has been mounted, it requires **1 day** to fully charge the supercapacitors.

Once charged, the sensor’s solar panel continuously charges the supercapacitors during daytime.

{% hint style="info" %}
**Use of semiconductors**

The Wildfire Sensor's power supply is stored in [supercapacitors](https://docs.dryad.app/dryad-documentation/resources/glossary#supercapacitor) rather than rechargeable batteries as rechargeable batteries can potentially ignite. Using batteries would defeat the purpose of a wildfire detection system.

For more information, see [Silvanet Wildfire Sensors](https://docs.dryad.app/dryad-documentation/silvanet-suite/silvanet-suite/silvanet-wildfire-sensors).
{% endhint %}

## Calibrate Wildfire Sensor - 14 days

After the Wildfire sensor has been fully charged, the sensor begins a **14-day** initial calibration.

Once mounted, the Wildfire Sensor runs a calibration to prepare the device for fire detection. During this period, the Sensor does not provide any useful data may send false fire alerts, even after a month after deployment.

After this "*settling in*" period, the Wildfire Sensor is ready to detect fires.

{% hint style="info" %}
**Interactions after calibration period**

After interactions with the Wildfire Sensor, it requires at least 5 days to return to steady state.

For more information, see [Sensor normalization](https://docs.dryad.app/dryad-documentation/silvanet-deployment/deploy-sensors/sensor-normalization).
{% endhint %}