Feature 1MAIN FUNCTIONS: Optical time domain reflectometer, 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. 26 FUNCTIONS: Optical time domain reflectometer is also an optical power meter, with stable light source, visual fault location, LED light, and event map. 3CONVENIENT AND COMPACT: Compact size and being lightweight as well, convenient to carry to different scenes to use. 43.5 IN COLOR TOUCHSCREEN: OTDR supports multi touch, smoothly operation, soft light screen, adjustable screen brightness. 5BASIC INFORMATION: OTDR has a measurement range from 0 to 80km, and the infrared light can arrive 10km, check the details for better user experience!Item Type: OTDR Fiber Optic TesterMode: AUA 16UMaterial: ABSConnector Model: SC, UPCStable Light Source: 1550nmOTDR: Approx. 0 to 80000m / 0 to 262467.2ftOptical Power Meter: 8 wavelengths 850, 980, 1300, 1310, 1490, 1550, 1625, 1650Red Light: Approx. 10000m / 32808.4ftLED Lighting:Dust Proof Interface: SC interface for OTDR, 2.5mm interface for OPM PFLDisplay: 3.5 inch touchscreen display screenPower Supply: Built in 3.7V, 2200mah polymer battery (shipped with built in battery)Voltage: 100-240vSix Functions: Optical time domain reflectometer, optical power meter, stable light source, visual fault location, LED light, event map .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x OTDR Fiber Optic Tester1 x Manual1 x Charging Head1 x Charging Cable1 x Disc1 x Storage Bag1 x FC LC Adapter