Feature: 1. MAIN FUNCTIONS: Optical time domain reflectometer is used to evaluate FTTx and access network construction and maintenance, identify fiber optic break points, measure fiber optic cable length, and calculate relative optical power loss. 2. DATA TRANSMISSION AND ANALYSIS: USB data interface, including analysis software for further data analysis or processing. 3. MULTIFUNCTIONAL: Optic fiber cable tester is a multifunctional meter that has a touch color screen, and is a fiber power meter, VFL, and has a stable light source. 4. ABS MATERIAL: Made of premium ABS material, this meter has a wear and weather resistant shell, providing good use experience. 5. EASY TO USE: OTDR supports FC, SC, PC connector, and can automatically adjust pulse width, high accuracy operation ensures a more delicate works. Specification: Item Type: OTDR Fiber Optic Tester Material: ABS Wavelength: 1310nm or 1550nm Fiber Type: 9, 125um SM fiber Connector: FC, SC, PC Dynamic Range: 22dB Pulse Width: 5ns to 8000ns, automatic Event Blind Spot: Approx. 3 meters / 9.8ft Attenuation Blind Plate: Approx. 10m / 32.8ft Distance Measurement Accuracy: ± (1m+2 x 10-4 x Distance) OPM: -50 to +26dBm Calibration Wavelength: 850, 1300, 1310, 1490, 1550, 1625nm VFL: Greater than or equal to 10mW Optical Light Source: 1550nm Battery: AA x 3 (shipped without battery) Battery Working Time: Greater than or equal to 2000 measurements Saving Data: Greater than 500 Working Temperature: -5 to 40 ℃ Storage Temperature: -10 to 60 ℃ Humidity: 0 to 85% (non condensing) . Package List: 1 x Reflectometer 1 x Manual 1 x SC Connector 1 x FC Connector 1 x USB Cable 1 x Storage Bag 1 x Accessory1 x Strap Rope