Our 9 channel color duplex multiplexer allows the viewing of up to 9 image sources on one screen, while simultaneously recording full screen images on a VCR. It has an array of features. Viewing options include full-screen, multi-screen, or sequential switching with adjustable dwell time. During VCR playback, full-screen and multi-screen viewing options are available. It is uniquely programmable for recording between 2 - 999 hours. It conveniently has a built-in time and date generator with an 8 character camera title function. The video loss alert and alarm detection are structured as two distinct sounds that feature an up to 100 record. The best thing about our 9 channel duplex multiplexer is it is compatible with all standard and time lapse VCRs. There is also a 4 channel color (RMX-4C), and 16 channel color (RMX-16CD) version available.