GE Fanuc Multilin UR 7HH Communications Module in stockThe GE UR 7HH is a communications module for the UR Series of Multilin Universal Relay Systems, designed to facilitate efficient inter relay communication. Key Technical Specifications Communication Characteristics: Wavelength: 820 nm Type: Multimode, LED Channels: 2 channels Applications: Inter relay communication within the UR Series. Applications: Primary or backup protection and control for feeders Bus blocking interlocking schemes High speed