Features 1. Two wavelength: 1310/1550nm 2. Measurement distance: 60km 3. .Touching screen ( Optional) 4. Test record can be saved as sor format 5. Optical power meter/ optical light source/ visual fault locator/ OTDR- -Multi-function tester 6. Editable file name and lineNo. 7. Support upgrade 8. 4 inch ISP Display, 800*480 pixels, Clear and readable in outdoor sunlight 9. Quick boot, it takes only 2 seconds to test