One in five properties was affected by water damage. Water sensors are inexpensive and can be connected to the Timberwolf Server via 1-Wire, KNX, MQTT or HTTP. The server starts local measures such as blocking the valves and switches on the lighting. In addition, alarm messages to the residents are useful. The Timberwolf Server sends a notification via Telegram to users with this applet so that they can be alerted quickly and manage the water ingress.