Item Type: Optical Power Meter_x000D_Model: AUA G510B_x000D_Material: ABS_x000D_Output Optical Power: >20MW_x000D_Output Distance: 20KM_x000D_Power Supply: Requires AA batteries x2 (shipped without batteries)_x000D_Power Measurement Range: -50 - +26dbm_x000D_Probe Range: InGaAs_x000D_Wavelength Range: 850-1625nm_x000D_Standard Wavelength (nm): 850, 980, 1300, 1310, 1490, 1550, 1625_x000D_Display Resolution: Linear display 0.1%, logarithmic display 0.01dBm_x000D_Operating Temperature: -10 - +60_x000D_Storage Temperature: -25 - +70_x000D_Auto Shutdown Time: 10 minutes_x000D_Battery Life: Not less than 40 hours 1Calibration Function: The power measurement range is ?50 to +26dbm, relative to the power calculation, with calibration function, can produce faster and more accurate data, very convenient. 2Low Battery Consumption: This optical power meter has a sensitive chip and a sturdy internal structure. The battery consumption is low and can work continuously for 40 hours with high endurance. 37 Wavelengths And Light Sources: Seven wavelengths are 850, 980, 1300, 1310, 1490, 1550 and 1625nm, as well as SC, FC, ST adapters. Cover most of the needs of communications engineering maintenance. 4Easy Carry: This optical power meter does not need to wait for preheating, plug and play, small size, light weight, easy to carry, but also with LED light, very practical. 5Clear Blue Screen: This optical power meter has clear blue screen. Details mean professionalism, and a clear display of results or information can enhance the user experience.1 x Power Meter 1 x FC Adaptor 1 x Manual