diff --git a/custom_components/aurora_solar/sensor.py b/custom_components/aurora_solar/sensor.py
index e69de29..46a3cdd 100644
--- a/custom_components/aurora_solar/sensor.py
+++ b/custom_components/aurora_solar/sensor.py
@@ -0,0 +1,27 @@
+class AuroraSensor(SensorEntity):
+    def __init__(self, host, port, slave_id, name):
+        self._host = host
+        self._port = port
+        self._slave_id = slave_id
+        self._name = name
+        self._state = None
+        self._attr_native_unit_of_measurement = "W"
+        self._attr_name = f"{name} Leistung"
+
+    def update(self):
+        try:
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.settimeout(3)
+            s.connect((self._host, self._port))
+            # Slave-ID in den Befehl einbauen (z. B. \x02 für Slave 2, \x03 für Slave 3)
+            command = bytes([self._slave_id]) + b"\x30\x33\x0D"
+            s.send(command)
+            response = s.recv(1024)
+            s.close()
+            if response and len(response) >= 2:
+                self._state = int.from_bytes(response[:2], byteorder='little', signed=True)
+            else:
+                self._state = None
+        except Exception as e:
+            self._state = None
+            _LOGGER.error(f"Fehler bei der Abfrage: {e}")