The only Z-Wave rain sensor I know that is compatible with Homey is the POPP Z-Rain Sensor. But it uses batteries and I have no personal experience with this device, sorry.
But I have the POPP Z-Weather, about 2 years, and the POPP Outdoor Siren 2, about 3/4 year, in use, and so far I have had no bad experiences with either device.
Note: Many rain sensors determine the amount of rain via a rocker with two paddles (see photo). In order to detect whether it’s raining, one of these paddles must first fill with rainwater and then tilt due to the weight. Depending on the strength of rain, it can take up to several minutes until the rain sensor recognizes that it’s raining. If you want the awning to close automatically at the first raindrops for example, you have to use a different type of rain sensor.
