The sml-m2 from shanhualin is a portable, all-in-one testing instrument that combines four key functions: a red light pen (for fiber path tracing), an optical power meter (for measuring optical signal strength), a line finder (for detecting hidden cables), and a network cable. The sml-m2 from shanhualin is a portable, all-in-one testing instrument that combines four key functions: a red light pen (for fiber path tracing), an optical power meter (for measuring optical signal strength), a line finder (for detecting hidden cables), and a network cable. The most worth buying multi-functional fiber optic test all-in-one machine in 2025 - sml-m2 from fir forest, which integrates red light pen, optical power meter, line finder and network cable tester into all-in-one, is specially designed for engineers, decoration masters, and network operation and. Optical power meter with integrated red light source, available in 15/30/50 mw models. this all-in-one device combines a high-precision red light source, multi-functional testing pen, and network cable tester, making it ideal for a wide range of network maintenance scenariosWhether it is home. Haile is the global brand name of Beijing Haile Technology Co., Ltd, which is a comprehensive enterprise focusing on the research and development, production, sales and service of high-performance network transmission, comprehensive cabling and electronic terminals., with independent research and development and production capacity, the. JILONG has introduced multifunctional OTDR, optical power meter, stable light source, optical fiber signal identifier, optical fiber end face detector and many more JILONG, a global provider of optical communications products, technologies and solutions, offers solutions for fiber-optic fusion. Auxiliary lighting function: the main and auxiliary computers are equipped with LED lighting lights, and you can use the lighting with one button without turning on the machine. Powerful red light source: open the top right cover and insert the fiber jumper to test the red light.