Results 2 issues of cass3825

I cannot seem to trigger the relay. See screenshot for configuration which i believe should be triggering at least three limits. ![2023-04-02-123451_1920x2160_scrot](https://user-images.githubusercontent.com/15134084/229369312-5f3c79d0-3dd4-4f2e-9fe5-73626a875d40.png)

bug

Incorporate 'addr' variable, either in multiple instances of the library or as part of each function call. This will allow multiple displays to reside on the same serial port. Wiring...