High Performance Wireless Connectivity.Determines Level Measurement by Monitoring Pressure at the Bottom Point of Vented Top Mount Tanks, Deep Wells, Water Towers, Rivers, and More.Ideal Low-Cost Solution When Liquid Temperature and Densities are Not Changing.Designed to Help Meet EPA Spill Prevention (SPCC) API Inventory Monitoring Requirements.Media Isolated Submersible Hydrostatic Pressure Sensor.Pressure Range of Up to 100 PSI.