Clear-Com IF4W4 Encore 4-Channel InterfaceThe IF4W4 modular 4 wire interface connects camera intercoms, two way radios, ber optics, and other 4 wire devices to a standard Clear Com intercom line. The 1 RU chassis holds up to four individual interface modules, each with its own 4 wire terminal block and XLR 3M connector to interface with Clear Com. The IF4W4 accepts balanced or unbalanced 4 wire input and is transformer isolated. It is powered by the Clear Com intercom line, using standard two