# Learn/send custom IR or RF signals?

**URL:** <https://community.homey.app/t/learn-send-custom-ir-or-rf-signals/51515>\
**Category:** Questions & Help\
**Tags:** rf-433, infrared\
**Created:** [September 11, 2021, 7:06pm UTC](https://community.homey.app/t/learn-send-custom-ir-or-rf-signals/51515 "2021-09-11T19:06:55Z")\
**Posts on this page:** 1\
**Showing post:** 72

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [June 27, 2023, 3:00pm UTC](https://community.homey.app/t/learn-send-custom-ir-or-rf-signals/51515/72 "2023-06-27T15:00:20Z")

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> [@Lipas](#):
>
> HP23 433MHz device database

Afaik it only has a IR device database.  
So, I think you’d find out if your hood remote control is IR or 433MHz based.

When it’s IR based, maybe this is an idea

> [@Infrared receiver to trigger flow in Homey (Pro)](https://community.homey.app/t/infrared-receiver-to-trigger-flow-in-homey-pro/52883/4):
>
> This receives and then sends the IR signal’s code via MQTT. That way you can trigger flows with the corresponding code of your choice. [https://kookye.com/2016/12/13/use-nodemcu-and-infrared-receiver-to-send-signal-to-mqtt-client/](https://kookye.com/2016/12/13/use-nodemcu-and-infrared-receiver-to-send-signal-to-mqtt-client/) A flow to start the cooker hood, could look something like this

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