Sonoff RF Bridges are great to take every day houshold remotes, alarm systems, passive IR seasons etc , and pass the codes they transmit via MQTT messages.
These bridges can also be flashed with the Tasmota open-source firmware used for Home Automation.
Follow the instructues in this post to flash with the Tasmota Firmware (using the TX, RX, VDD, GND configuration pins) above: https://explorationspace.co.za/2020/12/10/flashing-sonoff-devices-with-tasmota/