Problem with Rain water sensor

Hey, this is Tharun and I couldn’t find the rainwater sensor in the components list and I tried to find the component by searching in google too. I came to know that it is in the development process so IDK how I could use that. Besides that, I am very new to this interface. I even tried to create my own rainwater sensor using other components but couldn’t find the right resource to make it. Can someone please help me out? I found that someone already used the rainwater sensor but IDK who used it. I saw it from the forums group.
Thanks in advance.