Optical Infrared Water Liquid Level Sensor- Two Sensors- High/Low Liquid Level

Hello All- I could really use some help. I am a Arduino Uno nob and have been struggling with working with a Optical Infrared Water Liquid Level Sensor. I am actually trying to run two sensors, one to trip a relay at the low level and one to trip a relay at the high level of a water container.

Does anybody have any experience working with these sensors?

Which sensor, brand, part nr., can you post a datasheet link and your latest programming attempt?