Features： 1、High Efficiency: The meter has a wide measurement range of ‑70 to +10dbm, the measurement is fast and accurate, no need to wait for warm up. 2、 Performance: Adopt sensitive chip and sturdy internal structure, the output distance is up to 10km, has relative power calculation and calibration function. 3、Long Battery Life: The battery consumption is low, which ensures a long battery life, and can work continuously for 40 hours. 4、7 Wavelength: Feature 7 wavelengths for usage, which are 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm, can meet your most needs. 5、Easy Operation: The meter is plug and play, with display screen, LED light and SC FC ST adapter, which is very convenient for operation. Specification： Item Type: Fiber Optical Power Meter Material: ABS Output Optical Power: >10MW Output Distance: 10km Power Supply: 2 x AA battery (delivery without battery) Power Measurement Range: -70 to +10dbm Probe Range: InGaAs Wavelength Range: 850-1625nm Standard Wavelength(nm): 850, 980, 1300, 1310, 1490, 1550, 1625 Display Resolution: Linear display 0.1%, logarithmic display 0.01dBm Working Temperature (℃): -10℃ to +60℃ Storage Temperature (℃): -25℃ to +70℃ Automatic Shutdown Time (min): 10 minutes Battery Continuous Working Time: Not less than 40 hours Package List： 1 x Fiber Optical Power Meter 1 x FC Adapter 1 x Manual