TM290T Smart OTDR OPM OLS VFL Tester With 4inch Touch Screen Tester,1310/1550nm 22/20dB OTDR Optical Time Domain Reflectometer ,Wide Measuring Range

One Key Operation, Legible Test Data Integrated with Visual Fault Locator system, it is easily to detect fault location of dead Zone Use the rubber Key, good dustproof, waterproof, quakeproof ability, suitable for field maintenance work Use big capacity battery, long working time, suitable for long time field working Suitable for engineer construction and maintenance fault location of FTTx and access network