3-in-1 High-Precision Mini Optical Fiber Pen Power Meter & Red-Light VFL — 5 km Range, 6 Wavelengths (850/1300/1310/1490/1550/1625nm), SC/FC/ST, RJ45 Cable Test

A compact, lightweight 3-in-1 fiber tester that combines an optical power meter, red-light visual fault locator (VFL) and network cable tester in a pen-sized form for easy transport and field use. The built-in VFL provides a dynamic detection range up to 5 km to quickly locate breaks and faults. Operation & cable test: to enter RJ45 test mode, press and hold the UNIT key for 3 seconds; press the UNIT key again to exit RJ45 test mode. This simple long-press control makes switching to network cable diagnostics quick and intuitive. Optical features: selectable across 6 wavelengths — 850 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm and 1625 nm — for compatibility with a wide range of fiber systems. Connectivity: supports three common fiber interfaces — SC, FC and ST — for flexible connection to most fiber equipment. Additional highlights: small footprint and low weight for convenient carry and field operation, plus dedicated network cable test capability to cover both fiber and copper link checks.