Is there a way to connect the TP-LINK TAPO T300 water leak sensor to Homey Pro?

[smarthomesven]

That’s not possible. The Tapo hub does not expose the sensors via the API, as stated by the Tapo app developer:

@Koktail

Do note that currently not all Tapo devices are available through the Tapo API, e.g. camera’s, vacuums and sensors. We are working together with TP-Link to add support for these devices in the future.