M-3000 Pool Water Leveler Control Sentry M3000 Automatic Pool Filler Our Swimming Pool Water Level Control Sentry is perfect for maintaining a stable pool water level. Once installed, it keeps the pool water level at the desired level.Ordinary plastics can become brittle with water and sun exposure. We use high quality engineering grade plastic material. It is not only resistant to sunlight but also resistant to moisture and oxidation.Whether you have an above ground pool or a plastic inflatable pool or a garden folding pool. It just needs to be secured in the pool in the right way. You can maintain a stable pool water level Sharing from other customers From Tom: My home state has a hot climate. Moisture evaporates quickly. I am very bothered by the pool water level dropping due to evaporation. I had to reach for the hose every few days to refill. But when I happened to have this Pool Water Level Control Sentry, everything changed. I don't have to fill the water manually anymore. When the water level drops, the Pool Water Level Control Sentry automatically fills the water.From Peter: This keeps our pool full when we are out traveling as a family. No more worrying or bothering our neighbors checking the water level during the drought we are in.From Tim: After owning this, I realized that pulling on the hose to keep the pool level up was a stupid thing to do. After this one was installed. My pool water level has been very stable Sharing from other customers From Tom: My home state has a hot climate. Moisture evaporates quickly. I am very bothered by the pool water level dropping due to evaporation. I had to reach for the hose every few days to refill. But when I happened to have this Pool Water Level Control Sentry, everything changed. I don't have to fill the water manually anymore. When the water level drops, the Pool Water Level Control Sentry automatically fills the water.From Peter: This keeps our pool full when we are out traveling as a family. No more worrying or bothering our neighbors checking the water level during the drought we are in.From Tim: After owning this, I realized that pulling on the hose to keep the pool level up was a stupid thing to do. After this one was installed. My pool water level has been very stable M-3000 Pool Water Leveler Control Sentry how it works When the water level drops, the unit's fill switch opens. Automatic water filling is carried out. When the water level rises to the specified position, the water filling switch of the device will be closed automatically. Material Resistant to oxidation, sunlight, humidity and pressure. Installation Filled with stones and fixed next to the pool. Connect the water pipe Scope of application All kinds of indoor and outdoor swimming pools. Cistern. Inflatable pools. Sinks and so on.