Connector (Interchangeable SC,FC,ST,LC). Buy D YEDEC ini-Pro 1310/1550n OTDR ulit-Function tester Built in... Built-In: 3., 5 inch Color Display (not touch);OTDR, Event Map, Power Meter, Light Source, VFL, Cable Length Measurement Tool, Cable Tracker, and RJ45 Sequencer 9 In 1 60km Mini OTDR 1310/1550nm 24/22dB Fiber Optic Reflectometer Touch Screen Vfl Ols Opm Event Map Ethernet Cable Tester Fiber Optic Tester OTDR A-900A SCAPC FCAPC Interface 9 In 1 Function 60K 1310 1550n VFL Visual Fault Locator Parameters:Mini-Pro OTDR Test Wavelength 1310/1550nm,Test Range 5m~60km,Test Unit is km. This series OTDR is a multifunctional fiber optic tester that integrates optical power meter, VFL, OLS, event map, RJ45 line finding, and line length/sequence testing Internal Storage: Micro USB Data Interface; External storage TF Card. Accurate and Professional Measuring – For Auto OTDR Mode, it is One Key Operation, no need to have complex settings and allows even greenhand user to use it confidently.