This product is discontinued with a projected last order date of March 31, 2019.
The suggested alternative is MT-702.

The MST-431 / 4.3" Modero S Series Tabletop Touch Panel is a control surface for managing a wide variety of digital and analog devices in conference rooms, classrooms and other types of spaces. The MST-431 has a sleek design that remains affordable due to its ruggedized plastic housing. Key features include a brilliant 24-color depth, PoE connectivity, video streaming, and VoIP support – all at an economical price point.