This is a Video Camera system made by EXXIS and sold at Costco about 10 or more years ago. Each system includes a Black and White Monitor, 4 B&W video cameras (with built in microphones) and necessary cables to hook it all up.
System is 1 of 2 that was removed from my office warehouse when we upgraded to a 16 camera high resolution color DVR system. One has already found a home with this one left.
Contact me at firstname.lastname@example.org or comment below if you want it.