Ulisem Fiber Optic Tool Kit with 10mW Optical Power Meter, Portable Pen-Type Fiber Optic Tester, Red Light

The red pen uses a high-performance probe, offering stable and strong penetration. It automatically shuts off after 10 minutes of standby time, saving energy and extending its lifespan. The optical power meter provides seven different test wavelengths to meet various needs. It is compatible with SC/FC interfaces and easy to use. Standard 2.5mm interface, supports FC/SC/ST.