Trying to make a puck js doorbell and need advice on range

Also what are you using as an esphome bridge? A smartplug or similar?

It's a mix - I have a SONOFF thing wired in upstairs which does the hall light, and that runs it - but it wouldn't reach.

So then I just used an ESP32 board I had kicking around (something like https://www.amazon.co.uk/ESP-32S-Development-2-4GHz-Bluetooth-Antenna/dp/B071JR9WS9/ref=sr_1_3) and stuck it in the TV cabinet, powered off the USB supply I use for my Google TV.

I think Tasmota will do the bridge too? https://tasmota.github.io/docs/Bluetooth_MI32/ But I'm not sure as I've never used it.

For advertising, I actually mean:

function updateAdvertising() {
  NRF.setAdvertising(require("BTHome").getAdvertisement([
    {
      type : "battery",
      v : E.getBattery()
    },
    {
      type : "temperature",
      v : E.getTemperature()
    }
  ]), { name : "Sensor1", interval:20 }); // <---- here
}

And keep your setInterval the same. It will use more power, but you can for instance do this, based on the code lower down https://www.espruino.com/BTHome:

var buttonState = false;
var slowTimeout;

function updateAdvertising() {
  NRF.setAdvertising(require("BTHome").getAdvertisement([
    {
      type : "battery",
      v : E.getBattery()
    },
    {
      type : "temperature",
      v : E.getTemperature()
    },
    {
      type: "button_event",
      v: buttonState ? "press" : "none"
    },
  ]), { name : "Sensor1", interval: buttonState?20:2000 });
  if (slowTimeout) clearTimeout(slowTimeout);
  slowTimeout = setTimeout(function() { 
    slowTimeout = undefined;
    updateAdvertising();
  }, 60000);
  // ensure that subsequent updates show button is not pressed
  buttonState = false;
}
// When a button is pressed, update advertising with the event
setWatch(function() {
  buttonState = true;
  updateAdvertising();
}, BTN, {edge:"rising", repeat:true})

updateAdvertising();
NRF.setTxPower(4);

So now, when you press the button it should start advertising quick, but only for 60 seconds while it's advertising a button press, and then it'll go back to being slow (and will still update every 60 seconds).