The WG3104 is a 4-channel high-speed optical power meter module engineered for fiber auto-alignment systems and high-throughput optical module production testing where measurement latency directly limits cycle time. Its >200Hz data throughput—with sampling rates up to 1000 conversions per second in alignment-optimized configurations—enables real-time power feedback for closed-loop fiber coupling, active alignment, and fast pass/fail sorting on production lines. Each of the four channels supports independent wavelength configuration across 780/850/1270/1290/1310/1330/1490/1550/1577/1625nm, allowing simultaneous monitoring of multiple ports or wavelength paths without reconfiguration. The InGaAs detector (2.0mm active area) delivers 0.1dB accuracy and 0.1dB linearity, with dual-range coverage of −70 to +10 dBm (Type A) or −50 to +27 dBm (Type B). USB and LAN communication ports support full remote control and integration into automated alignment platforms or ATE systems. At just 114×150×38mm and 0.2kg, it is a compact OEM-style module—not a benchtop instrument—purpose-built for embedding into coupling stations, silicon photonics alignment tools, and optical transceiver production equipment.