> For the complete documentation index, see [llms.txt](https://docs.nwblue.com/nw-blue/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nwblue.com/nw-blue/products/radio-controllers/herelink-blue/user-guide/wireless-communication.md).

# Wireless Communication

## Pairing

From the "App Launcher" screen, slide down the notification drawer from the top of the screen.

Select **Herelink Settings**

![](/files/yXNa6CS1ao0otMYsIgrl)

Click Pair button and then hold the **Pair/Reset** button on Air Unit until LED2 blinks.

![](/files/u7uZCaRwp19VrniYkpND)

![](/files/QmTPHtl4b25Fxaypcvog)

![](/files/mstMDYnKmy4RP8JLhWMF)

![](/files/Ei6mzGGsIvD2pq1Ph5e8)

## **Selecting FCC/CE settings**

Select the region you are residing in or matches closest to your locations policy from Country under **Herelink Settings** main screen.

![](/files/KtYPRA4YRVjEuO6uAB2B)

## Frequency Setting

Click **FREQUENCY** in Herelink Settings screen to adjust frequency range.

![](/files/sNkJQ33vB5RdnLgwUZOz)

* Freq (Fixed frequency selection, used to set frequency manually）
* DL BW

  （Downlink bandwidth: select DL\_10M / DL\_20M for less interference, 20M for long distance control. 1.4M is preferred in multiple interference scenarios）
* Uplink bandwidth: select UL\_1.4M / UL\_10M / UL\_20M for less interference, 20M for long distance control. 1.4M is preferred in multiple interference scenarios
* Hopping

  （downlink signal hopping switch, You are advised to enable this mode to automatically select the best working frequency）
* Tx Ant （Antenna select）
* PAIR （Pair button）
* GET STATE （upload setting）
* FREQ SCAN （Scan the current optimal frequency）