Features 2.5MM INTERFACE: The optical power meter has standard 2.5mm interface, universal for SC FC ST adapter, convenient and practical. 10 WAVELENGTHS: Supports up to 10 wavelengths, 850nm 980nm 1270nm 1300nm 1310nm 1490nm 1550nm 1577nm 1625nm 1650nm. MEASURING RANGE: Optical power meter with LED light, with a measurement range of -70-10dBm, accurate measurement and low error. PORTABLE DESIGN: The fiber attenuation tester has compact size, comfortable holding, with large display screen, which is clear and intuitive. AUTO SHUTDOWN: In standby mode, the fiber optic attenuation tester automatically shuts down after 10 minutes, effectively saving energy. Specification: Item Type: Optical Power Meter Model: AUA Y710A Power Measurement Range: -70-10dBm Probe Type: For InGaAs Wavelength Range: 850-1650nm Standard Wavelength: 850nm 980nm 1270nm 1300nm 1310nm 1490nm 1550nm 1577nm 1625nm 1650nm Linear Display: 0.1% Logarithmic Display: 0.01dBm Working Temperature: -10-60℃ Storage Temperature: -25-70℃ Battery Continuous Working Time: Not less than 40 hours Automatic Shutdown Time: 10 minutes Power Supply: 2 x AA battery (not included) Package List:1 x Optical Power Meter1 x Adapter1 x User Manual Package List 1 x Optical Power Meter 1 x Adapter 1 x User Manual