This is a lot of three processor units. They originally came with the D-73D 3D projector. They were working when uninstalled from a showroom.

The Runco DHD4 High Definition Digital Video Processor Vivix IV is a remote control designed for home surveillance systems. It features USB 2.0 connectivity and digital capabilities, allowing users to easily manage and control their surveillance setup. This set includes three processors for enhanced functionality and flexibility in monitoring and recording video feeds. Ideal for those looking to upgrade their home surveillance system with reliable and high-quality components.