Since the installation is individual depending on the cistern, I won’t say much about it. I will only say that I packed the sensor into a surface-mounted box from the DIY store and “potted” it with hot glue. Resin would probably have been better, but the sensor works perfectly so far. The sensor hangs downwards on a board in the cistern. My NodeMCU is connected to a cable about 6m long and is housed in a small storage room.
