1、Wide Application: This optical time domain reflectometer can be used to evaluate FTTx and access network construction and maintenance, identify fiber breaks, measure cable lengths, and calculate relative optical power loss. 2、Color Display: This optical time domain reflectometer features a touchable color screen with clear display and easy reading. 3、Multifunctional: This optical time domain reflectometer has OTDR function, event reflection function, optical power meter function, visual fault locator function and stabilized light source. 4、USB Data Interface: This optical time domain reflectometer has a USB data interface for easy data export for further data analysis or processing. 5、Compact And Portable: This optical time domain reflectometer is small in size and light in weight, which is very convenient to carry around and use. Item Type: Fiber Optic Cable Tester Material: ABS Wavelength: 1310nm or 1550nm Fiber Type: 9/125um SM Fiber Connector: FC, SC, PC Dynamic Range: 22dB Pulse Width: 5ns-8000ns, Automatic Event Blind: Approx. 3m/9.8ft Attenuation Blind: Approx. 10m/32.8ft Ranging Accuracy: ±( 1m+2x10-4xDistance ) OPM:-50-+26dBm Calibration Wavelength: 850, 1300, 1310, 1490, 1550, 1625nm VFL: ≥10mW Optical Light Source: 1550nm Battery: AA x 3 ( Shipped Without Batteries ) Battery Operating Time: ≥2000 Measurements Save Data: >500 Operating Temperature: -5-40℃ Storage Temperature: -10-60℃ Humidity: 0-85% ( Non Condensing ) 1 x Fiber Optic Cable Tester 1 x Manual 1 x SC Connector 1 x FC Connector 1 x USB Cable 1 x Storage Bag 1 x Accessory 1 x Strap Rope