streamsave.js

// This program receives BLE advertisements from www.streamsave.fi shower consumption devices and displays the data inside.
// Installation: see https://www.npmjs.com/package/@abandonware/noble

const noble = require('@abandonware/noble');
noble.on('stateChange', async (state) => {
    if (state === 'poweredOn') {
        noble.startScanning([], true);
    }
});

noble.on('discover', async (peripheral) => {
    if (peripheral.advertisement.localName != "SHOWER") {
        return;
    }
    const duration_in_seconds = peripheral.advertisement.manufacturerData.readUInt16BE(9);
    const temperature = peripheral.advertisement.manufacturerData.readUInt16BE(11) / 10.0;
    const litres = peripheral.advertisement.manufacturerData.readUInt16BE(13);
    const id = peripheral.advertisement.manufacturerData.readUInt16BE(15);

    console.log("Streamsave", id, "RSSI:", peripheral.rssi, "duration:", duration_in_seconds, "temperature:", temperature, "litres:", litres);
});