NOYITO USB Control Relay in NodeJS

noyito-relay.js

const HID = require('node-hid');

class Relay {
  constructor() {
    const devices = HID.devices();
    const deviceInfo = devices.find(d => d.product === 'USBRelay8');
    this.device = new HID.HID(deviceInfo.path);
  }
  set(n, on) {
    const send = Array(9).fill(0x0);
    send[1] = on ? 0xff : 0xfd;
    send[2] = n; // n is 1-8
    this.device.sendFeatureReport(send);
  }
  setAll(on) {
    const send = Array(9).fill(0x0);
    send[1] = on ? 0xfe : 0xfc;
    this.device.sendFeatureReport(send);
  }
  disconnect() {
    this.device.close();
  }
}

// Example usage
const relay = new Relay();
relay.setAll(false);
relay.set(1, true); // 1 is the first relay, 8 is the last