The RCI-800-FIB is a bi-directional data communication system that exchanges the status of 8 dry contact inputs and 8 analog inputs between a master and one or more remote units. A basic system consists of one master station and one remote station each with 8 dry contact and 8 analog inputs and 8 ‘C’ relay contact and analog outputs. All signals are bi-directional so that data may be read from the remote station and sent to it.