Tank Monitoring
The name of the company that produces nearly 90% of the tank monitoring systems in RVs is KIB.
The concept is great, but honestly, I can tell you that in my 20+ years of experience in RVing, the tank monitoring systems are good gauges - not great, defined reads on the tanks.
That being said, they can always be adjusted or worked on to make them perform they way they were designed. If you have having troubles with yours, you can always bring it back in to the dealership and have the probes looked at.
ST