Designed to interface the A 4567 Line monitoring unit with a fire indicator board. The addition of the A 4568 enables you to monitor the status of each individual zone. The interface can be set up to monitor each zone in two ways. 1. LED status indicates normal or fault (no distinction between open or short). 2. LED status indicates either short or open. Connection between the A 4567 and A 4568 is via a Cat 5e patch Lead. Screw terminals are provided for each zone.