Advice about water leakage sensors

Good afternoon! I wanted to ask for advice about water leakage sensors. The fact is that we recently moved to a new apartment and a neighbor lives on top who really bothers me because once we had a small flood. It was a small one because my family and I were at home, and if we were not at home, then I'm afraid to imagine what could have happened. We want to install Ajax water leak sensors, we have heard that they are quite good and also wireless. What do you say? Have you had any experience with this system?