Proteus L5 water level sensors are designed to send alerts when water (or liquids in general) levels go above or below level at which you place the float switch sensor. Along with a local audible alert, notifications/ text messages can be sent to multiple emails and phones. Device can be accessed through your computer or smart phone. Proteus L5 Level Sensor can be set as normally low/empty or normally high/ full. When level change, you will be notified. Keep an eye on the sump pump and other tank applications.<p><b>Why Proteus? </b></p> <p>• We have the best user interface that makes it easy for just about any one to set it up. No need to be a computer or internet expert. </p> <p>• Our sensors combine local audible alerts, with email and text notifications. Best of both worlds. </p> <p>• No need to install any Apps. Dont clutter your phone any more. Just use a web browser and it works from any device. Just like an app. </p> <p>• 802.11b/g WiFi provides seamless connectivity to your home/ office network </p> <p>• Add as many emails or contacts as you need. Do not restrict alerts to just one email or phone like other sensors.</p> <p>• Got a question before purchase? During setup? Talk to us directly. We are here to help.</p>