The Shelly Flood water sensor detects standing water and features a built-in temperature sensor. Configuration and alerts can be managed through the free app, or for technically savvy users, an API is available that allows the Shelly Flood to be integrated into the home network and any smart home system. The temperature measurement range is from -20 °C to 50 °C (± 1 °C), with a reporting interval of 24 hours, except in the case of flooding, where it occurs immediately. It supports WiFi 802.11 b/g/n, an open REST API, as well as MQTT, ioBroker, Home Assistant, openHAB, and Domoticz.