Dayton float switches are manufactured to be used as level sensors to determine the level of fluid in sump basins. These switches turn On & Off depending on the water level and a preset value, maintaining the desired water level. They include a float that automatically raises & lowers depending on the water level of the sump basin. These switches are employed for large areas as the tether moves in an arc as the water level in the sump basin changes. Choose from a range of these float switches, available in 14, 16 and 18 inch wire gauge options.