Purchased a Kona Labs LevelSmart Autofill for our pool as we travel and in our climate, water evaporates quickly. We received it within a few days. Installation was a breeze, after we had questions concerning the antenna in conduit, then going through our alum pool enclosure to mount the antenna tip inside the enclosure. Once that was set, the LevelSmart Sensor was installed then it paired and doing what it was supposed to do. I was surprised at the ease of pairing after we had another autolevel system several years ago that was a nightmare (don't think they are in business anymore).