1、MULTI FUNCTIONAL: Optical time domain reflectometer is used to evaluate FTTx and access network construction and maintenance, identify optical fiber breakpoints, measure cable length, and calculate relative optical power loss. 2、3.5 IN COLOR DISPLAY TOUCHABLE: Support multi touch, smoothly operation, soft light screen, adjustable screen brightness. 3、5 FUNCTIONS: Not only an optical time domain reflectometer, optical power meter, but also has the functions like stable light source, red light fault location, and LED light. 4、CONVENIENT AND COMPACT: Convenient to carry and store, easy to use in different scenes, withstanding different situations. 5、WIDE APPLICATION: OTDR is widely used in fields such as communication and power, an ideal tool for repair and maintenance. Item Type: OTDR Fiber Optic Tester Mode: AUA 18A Port: APC Material: ABS Stable Light Source Connector: SC PC Optical Power Meter Connector: SC FC ST Stable Light Source: 1550nm OTDR: Approx. 0 to 60000m / 0 to 96850.4ft Optical Power Meter: 7 wavelengths 850, 1300, 1310, 1490, 1550, 1625, 1650 LED Lighting Dust Proof Interface: SC interface for OTDR, 2.5mm interface for OPM PFL Display: 3.5 inch touchscreen display screen Power Supply: Built in 3.7V, 2200mah polymer lithium battery (shipped with built in battery) Five Functions: Optical time domain reflectometer, optical power meter, stable light source, red light fault location, LED light 1 x OTDR Fiber Optic Tester 1 x Manual 1 x Plug 1 x USB Cable 1 x Disc 1 x Storage Box 1 x FC LC Adapter