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

Thank you, good shout on the advertising interval - I assume that will add more drain to the battery though?

I'm using your espruinohub project with HA integration for the bluetooth->mqtt component but that bthome code looks much, much simpler. I'll try lowering the interval with something like

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

// Update advertising now
updateAdvertising();
// Update advertising every 20 miliseconds...
setInterval(updateAdvertising, 20);

First and see if that helps, then look into a bridge like you recommend. I was really hoping to avoid a third device in the middle but I guess BT isn't really designed for this even though the range isn't far.