3 in 1 Fiber Optical Meter NF919 The NF919 combines Visual Fault Locator and OPM Power Meter in a single, versatile tool for fiber optic technicians. This allinone design helps streamline testing and fault finding. Advanced display features: A color LCD provides clear visibility of results, and the builtin red light function offers both steady and flashing modes to aid fault detection along fiber links. Versatile wavelength options: Supports multiple wavelengths (850/980/1270/1300/1310/1490/1550/1577/1625/1650 nm) to ensure compatibility with a wide range of fiber optic applications. Userfriendly functions: Includes autooff to conserve battery, low battery indication, and adjustable frequency options (270/1000/2000 Hz) to suit different testing scenarios and fiber types. Use scenarios Onsite fault localization and verification: Use the Visual Fault Locator to identify the location of breaks or faults in a fiber run and verify results with the OPM Power Meter to assess power levels. Installation and commissioning: During fiber link installation, test continuity and power at multiple wavelengths to confirm link integrity and proper performance of the transmitter/receiver path. Maintenance and troubleshooting in network environments: In data centers or telecom networks, leverage the autooff and low battery indicators to maintain uptime, and switch frequencies to adapt testing to different fiber types and configurations.