The 1516LI is a network logic input device used to interface with an IED GLOBALCOM announcement control system. It provides 16 optically-isolated inputs that can be driven using dry contact closures or 0 to 50VDC logic signals. A green LED is provided above each input that illuminates when activated. The announcement controller is configured using the GLOBALCOM System Management Center software where logic inputs can be used to launch announcements, pre-recorded messages, events, or fault reports.