This Level Sensor measures liquid levels in the tank using pressure.
The stainless-steel construction and waterproof connector makes this a durable sensor
Use with: Tank Unit (G98233)
The product you are looking at is currently out of stock. Here are some alternatives:
Gallagher demonstrates how easy it is to install the Wireless Water Level Monitoring System: a complete, simple solution for continuous monitoring and management of water and other fluids.