# RFXtrx node not connecting

**URL:** <https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518>\
**Category:** General\
**Tags:** home-assistant\
**Created:** [21 December 2022 09:40 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518 "2022-12-21T09:40:16Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![dubbfredda](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@dubbfredda](https://discourse.nodered.org/u/dubbfredda)\
**Post date:** [21 December 2022 09:40 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/1 "2022-12-21T09:40:16Z")

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I try to control my 433MHz wall plugs from Node-RED with a RFXcom.  
Have added node-red-contrib-rfxcom and have set up the out-node.  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/7/473344dd826c7288b573ef3388e6888a75af3237.png)

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/e/ee4e56802aeb1f181a09ad743340be36b8618694.png)

But the rfx-light node will not get connected  
What can be wrong?

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [21 December 2022 09:52 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/2 "2022-12-21T09:52:27Z")

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> [@dubbfredda](#):
>
> What can be wrong

Is the port in use already?

Did you enter correct settings in the serial port config?

Are you running node-red in docker or a container?

Is the account running node-red a member of `dialout` group?

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<div class="post-metadata">

**Author:** ![dubbfredda](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@dubbfredda](https://discourse.nodered.org/u/dubbfredda)\
**Post date:** [21 December 2022 10:10 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/3 "2022-12-21T10:10:18Z")

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I don't think that the port is used by something else.  
Serial port config, were is that?

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [21 December 2022 10:12 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/4 "2022-12-21T10:12:19Z")

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> [@dubbfredda](#):
>
> Serial port config, were is that?

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/a/0/a048ede6fefa7d3fc096e695e83fc47f6cd1b065.png)

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**Author:** ![dubbfredda](https://avatars.discourse-cdn.com/v4/letter/d/4af34b/32.png) [@dubbfredda](https://discourse.nodered.org/u/dubbfredda)\
**Post date:** [21 December 2022 10:33 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/5 "2022-12-21T10:33:10Z")

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It look correct to me.  
From the HA hardware-list I have this

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/5/1/5163d4f41875060402bc47a21014bf1abed15418.png)

Same port as I have configured in the rfx-light node

The funny thing is that some times it get's connected after system reboot it gets connected.  
But most of the times it want connect.

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [21 December 2022 11:08 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/6 "2022-12-21T11:08:40Z")

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> [@dubbfredda](#):
>
> From the HA hardware-list

ok, so this is a Home Assistant install of node-red - i.e. contained

You will possibly need to head over to the HA forum and search for "serial port" since I have no idea how HA maps devices or the accounts they use etc.

Also, you might want to check out the repository - there may be known issues or workarounds already discussed; [Issues · maxwellhadley/node-red-contrib-rfxcom · GitHub](https://github.com/maxwellhadley/node-red-contrib-rfxcom/issues)

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [19 February 2023 11:09 UTC](https://discourse.nodered.org/t/rfxtrx-node-not-connecting/72518/7 "2023-02-19T11:09:20Z")

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