The LFV6U series is equipped with a variety of signal input terminals - two HDMI, DVI-D and USB. If the main video and audio signals are interrupted, the system immediately switches to alternative signals. This makes it ideal for mission critical control rooms and surveillance centers. When the signals are interrupted in a conventional display, the display image simply remains blank. The Failover and Failback functions immediately switch signals when the video signal is interrupted so the image continues uninterrupted. The LFV6U series incorporates a video playback synchronization function for vertically adjacent displays in multi-screen configuration. It assures more natural video playback compared to displays with unsynchronized timing. The LFV6U series can be quickly adapted for digital signage - just connect USB memory devices to inputs on each display in 2 x 2 multi-screen configuration for automatically synchronized 4K (4 x 1080p) images. No external devices or processors are required. This function also serves as a backup in case the primary video source fails.