Check the listing for details. DHL FAST Multifunctional OTDR 1610nm Mini Optical Time Domain Reflectometer. Condition: New. Listed at 299.99 USD. modname=ckeditor OTDR is apply to FTTx and access network construction and maintenance, to test fiber breakpoint , length, loss and input light automatic detection, automatic test by one key. The tester is compact with 3.5inch colorful LCD screen, new plastic shell design, shock-proof and drop-proof. The tester also combine 8 functions with highly integrated OTDR, Event maps, Stable Light source , Optical power meter, Visual fault locator , cable sequence proofreading, cable length measurement and lighting functions. It could quick detection of breakpoint, universal connector, .600 internal storage, TF card, USB data storage and built-in 4000mAh lithium battery, USB charging It is a good choice for long term field work. Feature： ● 3.5 inch color LCD screen ● Event Map ● Light Source ● High power optical power meter ● Visual Fault Locator ● RJ45 Sequence ● Lighting ● FC/SC/ST interchangeable ● 600 internal storage ● Expandable TF card, USB data export ●Built-in 4000 Mah lithium battery