Feature:1. HIGH RESOLUTION: This optical time domain reflectometer supports high resolution measurement, enabling precise measurement of small defects and losses between fiber cores and layers.2. SIMPLE OPERATION: The optical time domain reflectometer is user friendly in design, easy to operate, and can accurately measure without the need for complex setup and debugging steps.3. APPLICABLE SCENES: Used for various fiber optic measurement, such as fiber optic connectivity detection, fiber optic defect localization, fiber optic reflection and refractive index measurement, etc.4. BUILT IN BATTERY: The OTDR tester has a built in 2000mAh lithium battery with large capacity to ensure long endurance, equipped with a USB cable for charging anytime, anywhere.5. 3.5IN TOUCH SCREEN: Adopting a 3.5 inch TFT multi touch color LCD display screen, clear and intuitive, support LED flashlight function, suitable for more measurement environments.Specification:Item Type: OTDR TesterDynamic Range: 20dBEvent Blind Spot: 3.0mMeasurement Time: 5-180 SecondSampling Point: 8000Maximum Distance: 60kmAttenuation Blind Spot: 12.0mMeasurement Mode: Real Time, Average, AutomaticPulse Width: 5ns-20usAdapter: SC Fixed AdapterWith Optical Test: Dual Wavelength 1550nm or 1310nmOPM Power Range: -50-26dBmVFL: 10mWLED Flashlight: SupportDisplay: 3.5 Inch TFT Multi Touch Color LCD Display ScreenData Cable Type: Type CBattery: 1 x 3.7V Lithium Battery 2000mAh (built in battery)Working Hours: >8 hours (according to TR-NWT-001138)Storage Temperature: -20-70, <90%RHOperating Temperature: -10-50, <90%RH.Package List:1 x Reflectometer1 x USB Cable1 x Storage Bag1 x Accessory