An RV is somewhat self-sufficient. Your RV has an on-board fresh water supply, as well as holding tanks to capture the gray water from the sinks and black water from the toilet. It’s important for the ...

To read RV tanks equipped with the Garnet SeeLevel sensors, one can purchase a display monitor panel that has any of Bluetooth, RV-C, or NEMA2000 - all of which would be a better interface than this.

Summary of information discovered by Jim G. and documented in the above post: To trigger the tank sender/sensor, one needs to power the sender with 12V then pull the 12V line to ground in a particular ...