433Mhz Solar Siren/Strobe with Sonoff RF Bridge

I’m looking to implement a basic alarm system. I have some 433Mhz RF door/window sensors and some 433Mhz RF motion detectors. These are reporting their status to HA via a Sonoff RF bridge configured with Tasmota. I would like to include a 433Mhz outdoor solar siren/strobe in the setup but can’t figure out how I would trigger the siren and make it show as an entity in HA. With the door sensors and motion sensors, I just setup binary_sensors. I’m assuming that I could send an MQTT command via the Sonoff RF bridge. Any help would be greatly appreciated.