https://docs.arduino.cc/tutorials/nano-esp32/esp-now
~220m for the ESP to ESP protocol. but 2.4GH wifi can reach pretty far with the right antennas (I've personally been effective at ~2km with an Alfa card and yagi directional antenna)
https://docs.arduino.cc/tutorials/nano-esp32/esp-now
~220m for the ESP to ESP protocol. but 2.4GH wifi can reach pretty far with the right antennas (I've personally been effective at ~2km with an Alfa card and yagi directional antenna)