Monitor the level of one or multiple water tanks from the convenience of your phone to ensure you don't run dry. No more clambering up ladders and peering over the top. The fully sealed sensor unit uses a non-contact radar sensor to measure tank levels with millimeter accuracy, to ensure years of trouble free operation. Featuring a robust polycarbonate enclosure with an IP68 weatherproof rating to ensure it can stand up to the elements. Powered by 3xAA batteries, the sensor requires no external power and provides intelligent battery monitoring via the mobile app. This sensor can be used with a variety of tank types and shapes - installation requires a 30mm hole to be drilled in the tank lid / roof (at least 100mm above the water height). A single sensor can be used to monitor multiple tanks that are connected and have a common level. Access your tank data online with the free TankMate app for mobile (iOS & Android) and web.