Features APPLICABLE RANGE: can measure 8 standdard wavelengths 850/980/1300/1310/1490/ 1550/1625/1650nm , test range: -50 to +26dBm, 1mw red light source.suitable for 800‑1700nm optical fiber, compatible with SC FC ST connector. PRODUCT FUNCTIONS:This fiber power meter has backlight switch button and flashlight, It Support lighting, automatic shutdown,backlight selection, wavelenghth memory and user calibration. MULTIPLE USAGES: Used for measuring the continuous optical power, testing the connection and disconnection of fiber optic cable, troubleshooting optic line faults, testing fiber optic line losses. EXCELLENT PARTS: The fiber optic tester adopts low power consumption single chip microprocessor for control, with complete functions and stable performance, the built in probe improves its service life. APPLICABLE FIELDS: This handheld optical power meter is widely used in fields such as fiber optic cable construction and maintenance, fiber optic comm, fiber optic sensing, and optical CATV. Specification: Item Type: Optical Power Meter Power Supply: 3 x AAA Alkaline Dry Battery (Not Included) Power Measurement Range: -50 to +26dBm Probe: InGaAs Wavelength Range: 800-1700nm Standard Wavelength: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Display Resolution: Linear Display: 0.1%, Logarithmic Display: 0.01dBm Operating Temperature: -10-60℃ Storage Temperature: -30-70℃ Auto Power Off Time: 120s LCD Display: The measured power values are displayed in dB, dBm, mW, uW, and nW forms; 8 display wavelengths. Package List: 1 x Optical Power Meter 1 x User Manual Package List 1 x Optical Power Meter 1 x User Manual