Every unit comes with a 1-year warranty covering all components for manufacturer's defect or unit failure. If you would like greater peace-of-mind, there is an extended warranty that can be purchased at the time the order is placed that extends warranty coverage for an additional 2-years for a warranty of 3-years total.
Many things. The units are primarily designed to complete Class 1 air-brake testing. They are also fully compliant for AFM testing as an option. The system can be used to fully test an EOTD. The main unit and hand held can be used to remotely set and release brakes on the train consist for brake diagnostics.