Features Fast And Accurate: This fiber optic power meter requires no waiting for warm up, provides accurate measurements, relative power calculations, and calibration features. Wide Wavelength Range: This light power meter has wide wavelength range, with 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625 nm and SC, FC, ST adapters, covering most of the needs of communication engineering maintenance. Excellent ABS Material: This fiber optic power meter is made of excellent ABS material for the case, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. Compact And Portable: This light power meter is small in size and light in weight, which makes it very convenient to carry around and use. LCD Display: This light power meter features an LCD display that clearly shows a variety of values for easy reading. Specification: Item Type: Optical Fiber Power Meter Material: ABS Power Supply: 3 x AAA Battery ( Shipped Without Battery ) Power Measurement Range: -70-+10dBm Probe Range: 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 ℃ Automatic Shutdown Time: 120s LCD Display Description: The measured power value is displayed in the form of dB, dBm, mW, uW, nW; the display wavelength is 8 kinds. Package List:1 x Optical Fiber Power Meter1 x Manual Package List 1 x Optical Fiber Power Meter 1 x Manual