The appears to be a specific internal model or product identifier used by Chess House , a major retailer of chess equipment, typically associated with their electronic chess trainers and sets .
At its heart, PUL-VEC77 technology bridges the gap between raw signal transmission and digital interpretation. In advanced telecommunications and radar systems, signals are often sent in short, powerful bursts (pulses) rather than continuous waves. pul-vec77
Successfully deployed in a 3-axis CNC router and automated test rig. Avoid for sub-micron positioning or wet environments. The appears to be a specific internal model
Review of PUL-VEC77