The QTC Series is a customizable time-tagging module engineered for quantum optics, photon correlation measurements, and quantum information processing. The system provides picosecond-level resolution for timestamping photon detection events and electronic pulses. It accommodates high single and coincidence count rates, operating via standard Windows OS support and an intuitive GUI for real-time monitoring. The architecture is divided into standard laboratory (C-Grade) and space-qualified (S-Grade) missions.