You should take a look at esp-now. https://community.home-assistant.io/t/my-esp-now-integration-library-enable-direct-communication-between-your-esphome-devices-even-without-wifi-router/213681
Should work with esphome on the nspanel in theory.
You should take a look at esp-now. https://community.home-assistant.io/t/my-esp-now-integration-library-enable-direct-communication-between-your-esphome-devices-even-without-wifi-router/213681
Should work with esphome on the nspanel in theory.