Feature: 1. Efficient and Accurate: The measurement range of this meter is ‑50 to +26dbm, which tests fast and accurate, no need to wait for warm up. 2. Excellent Performance: The meter adopts sensitive chip, the output distance is 1‑5km, has relative power calculation and calibration function. 3. Long Service Life: The meter has sturdy internal structure, with low battery consumption, can work continuously for 40 hours, has long service life. 4. 7 Wavelength: The tester has 7 wavelengths which are 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm, can meet most of needs. 5. Easy Operation: The meter is plug and play, equipped with display screen, LED light and SC FC ST adapter, convenient for operation. Specification: Item Type: Fiber Optic Power Meter Material: ABS Output Optical Power: >1MW Output Distance: 1-5km Power Supply: 2 x AA battery (delivery without battery) Power Measurement Range: -50 to +26dbm 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 Meter1 x FC Adapter1 x Manual