Fiber Optic 9990-Power- Meter-Type-B -50dBm~+26dBm.Detector: InGaAs diode. Multi-Function Optic Cable Tester Built-in OPM and High-Resolution LED Screen with Interchangeable Optical Connector FC/SC

Precise Measurements: - This optical power meter accurately measures optical power levels from -50 to +26dBm and Calibration wavelengths 850/1300/1310/1490/1550/1625/1650nm. Compact and Portable: - The handheld device features a rugged rubber casing and weighs only 6 ounces, making it convenient for field use Wide Applications: - Suitable for testing fiber optic cables, networks, telecom systems, and other optical equipment in various industries.