Awesome

ESP32-433Mhz-Transmitter

A pure microPython RF Transmitter.

This transmit tool based on a config file where you combine user friendly name and used protokols.
Copy both files and the encoder directory to your ESP32
In your application import the module:
from IR_TX433_esp.py import *

Call it with ESPtx(name) name is the user friendly name out of the tx433_config.py
eg. ESPtx(Switch_on)

Futher as an expert you can create and add your own encoder files in the directory tx433_encoder I have implemented a power socket Quigg7000, the ev1527 protokoll and a spezial encoder for a remote bell.
Feel free to implement your own.

PS: How to connect a RF Transmitter to ESP32 see Google