The IS200TSVCH2A is a turbine-specific Terminal Board Servor under the speedtronic Mark VI series. This is only one of several types of turbine-specific I/O boards we have in stock, so make sure you get the right one for your needs. This board is a two-channel barrier-type servo terminal board, and it is one of numerous turbine-specific terminal boards available for the system. It's called an I/O module, and it's utilized to make a direct connection between the Speedtronic system and field devices. These boards allow users to simplify diagnosis, monitoring, and maintenance of linked field equipment and their connections by reducing or eliminating extraneous instrumentation and connection points. Two coil outputs and two pulse-rate inputs are included.