diff --git a/nodejs/FlightRadar24/flightTrackerConfig.js b/nodejs/FlightRadar24/flightTrackerConfig.js
new file mode 100644
index 0000000..69867fc
--- /dev/null
+++ b/nodejs/FlightRadar24/flightTrackerConfig.js
@@ -0,0 +1,59 @@
+const proxyHandler = {
+    set: function(target, key, value) {
+        if (!target.hasOwnProperty(key)) {
+            throw new Error("Unknown option: '" + key + "'");
+        }
+        if ((typeof value !== "number") && (!isNumeric(value))) {
+            throw new Error("Value must be a decimal. Got '" + key + "'");
+        }
+        target[key] = value.toString();
+    },
+};
+
+function isNumeric(string) {
+    for (let index = 0; index < string.length; index++) {
+        if (!"0123456789".includes(string[index])) {
+            return false;
+        }
+    }
+    return true;
+}
+
+
+class FlightTrackerConfig {
+    /**
+     * Data class with settings of the Real Time Flight Tracker.
+     */
+
+    faa = "1";
+    satellite = "1";
+    mlat = "1";
+    flarm = "1";
+    adsb = "1";
+    gnd = "1";
+    air = "1";
+    vehicles = "1";
+    estimated = "1";
+    maxage = "14400";
+    gliders = "1";
+    stats = "1";
+    limit = "5000"; 
+
+    /**
+     * Constructor of FlighTrackerConfig class.
+     * 
+     * @param {object} data
+     */
+    constructor(data) {
+        for (const key in data) {
+            const value = data[key];
+
+            if (this.hasOwnProperty(key) && (typeof value === "number" || isNumeric(value))) {
+                this[key] = value;
+            }
+        }
+        return new Proxy(this, proxyHandler);
+    }
+}
+
+module.exports = FlightTrackerConfig;
\ No newline at end of file