Simple optical power meter with a universal 2.5 mm interface that supports six wavelengths with stable power output. Compact and lightweight design: 70 g, 135 mm in length (including the joint) for easy handling and portability. Wavelength coverage: six calibrated wavelengths at 850, 1300, 1310, 1490, 1550, and 1625 nm. 2.5 mm universal plug for ST, FC, SC connectors ensures broad compatibility with common fiber optic components and systems. Benefits - Delivers stable power measurements across multiple wavelengths for reliable testing. - Broad compatibility with ST/FC/SC connectors and standard fiber networks. - Portable form factor suited for fieldwork, labs, and maintenance tasks. - Simple plug-and-measure workflow with minimal setup. Use scenarios - Field installation and maintenance of telecom links using 1310/1550 nm (and other wavelengths) to verify link power. - Laboratory calibration and testing of lasers, modulators, and photonic devices across 850–1625 nm. - Data center fiber patch panel troubleshooting and power verification on ST/FC/SC terminated links.