Two-wire interface module (HLI-2W2)  This is a two channel device that enables interoperability with Tempest, CellCom / FreeSpeak, and HME DX210 systems, and both Clear-Com and RTS analogue party-line systems. The module provides two analogue party-line connectors (3 pin female XLR connectors).    Use HelixNet main station menus to set the module for either RTS or Clear-Com systems. If RTS mode is selected,
you can set either: • Pin 1 – common for audio and DC • Pin 2 for power (30 Vdc and mixed audio channel 1 or 3) • Pin 3 for power (30 Vdc and mixed audio channel 2 or 4). Pin Out for the 3 pin female XLR connectors.