Feature:1. MULTIPLE USAGES: OTDR optical time domain reflectometer can also be used as visual fault locator and optical power meter, portable design is simple and practical.2. WIDE APPLICATION: Used for network construction, optical fiber breakpoint identification, optical cable length measurement, and relative optical power loss calculation.3. TESTER FEATURES: The optical fiber tester is equipped with USB data interface, built in 4400mAh li battery, 3.97in 800x480 IPS color touchable screen, easy to operate.4. WORKING RANGE: The wavelength range of the optical power meter is 8001650nm, supports 6 calibration wavelengths, and the measurement range is 50~+26dBm.5. PLASTIC HOUSING: The shell of the optical fiber power meter is made of ABS plastic, which has good toughness and erosion proof, suitable for various environments.Specification:Item Type: OTDR Fiber Optical TesterModel: AUA28AOPM: -50~+26dBmMaterial: ABSWavelength: 1550nm (20dB)Dynamic Range: 20dBMeasuring Distance: 0-60kmFiber Optic Connector Type: 9/125m SMUnit: Meter, Inch, MileReflection Blind Area: 2 meterData Storage: 200 GroupsDisplay: 3.97inResolution: 800 x 480pixels IPS screen (touchable screen)Power Supply: 7.4V 4400mAh lithium ion battery (built in battery) can be used for more than 5000 timesVisual Fault Locator:Wavelength: 650nmOutput Power: 10mWMode: CW, 1Hz, 2HzOptical Fiber Type: SM, MMOptical Power Meter:Measuring Range: -50~+26dBmWavelength Range: 800-1650nmCalibration Wavelength: 850 1300 1310 1490 1550 1610Detection Type: For InGaAsOptical Light Source:Emitter: FP-LDWavelength: 1550nmOutput Power: -5dBmFiber Type: SM.Package List:1 x Reflectometer3 x User Manuals1 x Cotton Swab Bag1 x CD1 x Sling1 x SC Connector1 x FC Connector1 x USB Line1 x Power Cord1 x Storage Bag1 x FC-LC Adapter