RM-802-IM (Last Time Buy) 6/21/2018 Category: Products, Clear-Com Encore Analog Partyline Systems, Encore for Industrial & Marine Selectable one- or two-channel communication IP20 environmental rating Asbestos-free in accordance with SOLAS Regulation II-I/3-5.2 Marine Certification compliant with DNVGL-CG-0339 (2016) Visual call signaling Balanced audio input with program interrupt (IFB) Optional plug-in gooseneck mic Built-in speaker