Now I have two of these by the pool and they both work great. They seal well and definitely keep water out. The picture shows a unit with a Z-Wave relay to control my pool's pumps. From the bottom I made a larger passage for the conduit where the power cords connect and also drilled two small holes for the buttons on the side. No water comes in, everything works. The other box only has a zip opening to grab the WIFI hotspot cable I put inside. Get a nice strong signal that's repeated in the pool and the device itself stays completely dry. I just wish there were tabs included for easier assembly. I just drilled two holes in the back of each for the screws, which I then sealed with silicone caulk.