Horace, you seem to be pretty good with the ESP32s. Could you take a look at this and let me know if you have had any dealings with the 433MHz Radio Transmitters and Receivers? I can’t seem to get them to work and the replies I’m getting are less than helpful https://forum.arduino.cc/t/esp32-and-433mhz-rf-transmitter-and-receiver-modules/1410513