> For the complete documentation index, see [llms.txt](https://docs.mclimate.eu/mclimate-lorawan-devices/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mclimate.eu/mclimate-lorawan-devices/devices/mclimate-co2-sensor-and-notifier-lorawan/co2-sensor-lorawan-device-communication-protocol/co2-measurement-period.md).

# CO2 Measurement period

### S**et** CO2 Measurement period 

The command is described in Table 21.

| **Byte index** | **Hex Value** | **Meaning**                                                                       |
| -------------- | ------------- | --------------------------------------------------------------------------------- |
| 0              | 24            | The command code.                                                                 |
| 1              | 0A            | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the good zone.   |
| 2              | 0A            | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the medium zone. |
| 3              | 0A            | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the bad zone.    |

*Table 21*

{% hint style="info" %}
Payload values in the example are default for the device.
{% endhint %}

**Example command:** 0x240A0A0A – The server sets CO2 measurement period.

### **Get** CO2 Measurement period 

| **Byte index** | **Sent request**   | **Received response**                                                             |
| -------------- | ------------------ | --------------------------------------------------------------------------------- |
| 0              | 25 – Command code. | 25 – The command code.                                                            |
| 1              |                    | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the good zone.   |
| 2              |                    | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the medium zone. |
| 3              |                    | 0x0A = 10 minutes. Used until the measured CO2 levels are inside the bad zone.    |

*Table 22*

**Example command sent from server:** 0x25;

**Example command response:** 0x250A0A0A =>  CO2 Measurement period is 10 minutes inside the good, medium and bad zone.


---

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