Feature: 1. Smart Testing: For evaluating FTTx and access network construction and maintenance, identifying fibre breakpoints, measuring cable length, and calculating relative optical power losses. 2. Wide in Range: The test wavelength of this OTDR is 1310/1550nm, and the test range is 5m to 100km, also, the dynamic range is 26dB 24dB. 3. Simpler Works: Equipped with a 4.3in touch screen for display and operation, the optical fibre tester is convenient and efficient to use. 4. Interfaces: 2.5mm VFL red light source interface universal for SC FC ST, OTDR stable light source interface can be changed to SC UPC, FC UPC at will, and 2.5mm OPM optical power meter interface universal for SC FC ST. 5. Easy Carrying: Comes with a compact size and a light weight as well, the simple storage and carrying enables both indoor and out door use. Specification: Item Type: Optical Network Tester Model: AUA800A Material: ABS Connector Model: For APC. Wavelength: 1310/1550nm Test Range: Approx. 5 ~ 100000m / 16.4 ~ 328083.99ft Display: 4.3in touch screen display. Power Supply: Built in 3.7V 4000mah polymer lithium battery, delivered with built in battery. RJ45 Receiver Power Supply: 2 x AAA battery, delivered without battery. VFL Red Light Source Interface: 2.5mm universal SC FC ST. OTDR Stable Light Source Interface: Can be changed to SC UPC, FC UPC at will. OPM Optical Power Meter Interface: 2.5mm universal SC FC ST. . Package List: 1 x Optical Network Tester1 x User Manual1 x Charging Cable1 x Plug1 x SC Adapter1 x RJ45 Receiver1 x Storage Bag1 x Strap Note: Can not be used to test splitter, if the splitter is tested, the dynamic needs to be greater than 42dB. Before the test or the test results are inaccurate, please clean the fibre optic connector.