# Pixhawk wifi module

**URL:** <https://discuss.px4.io/t/pixhawk-wifi-module/24476>\
**Category:** Uncategorized\
**Created:** [October 7, 2021, 8:01am UTC](https://discuss.px4.io/t/pixhawk-wifi-module/24476 "2021-10-07T08:01:54Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Serahan](https://discuss.px4.io/user_avatar/discuss.px4.io/serahan/32/9249_2.png) [@Serahan](https://discuss.px4.io/u/Serahan)\
**Post date:** [October 7, 2021, 8:01am UTC](https://discuss.px4.io/t/pixhawk-wifi-module/24476/1 "2021-10-07T08:01:55Z")

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Hi.

I am using the Pixhawk 4 of Holybro and MAVLink WiFi Bridge.  
 ![wifi bridge](https://discuss.px4.io/uploads/default/original/2X/3/3b31cba8ea4f3de3dd46bc28c5305baff5aca285.png)

I want to connect wifi bridge to TELEM2 of Pixhawk4.  
and Wifi bridge’s manual says that

SERIAL2\_PROTOCOL = 2(MAVLink2) or 1 (MAVLink1)  
SERIAL2\_BAUD = 921 (921600 baud)

so, I set SERIAL2\_BAUD = 921600. But, I can’t find SERIAL2\_PROTOCOL.  
I checked the Parameter Reference, but it’s not existed.

How can I connect between pixhawk4 and wifi bridge?

thank you for your time.