Feature: 1. Useful Tester: Used to evaluate FTTx, access network construction and maintenance, can also identify optical fiber breakpoints, measure optical cable length, and calculate relative optical power loss. 2. Better Design: Comes with 3.97in touch screen to largely facilitate the operation, while the USB date interface enables easier further processing on data and analysis, very convenient and efficient. 3. Reliable Work: Supports up to 4 groups of wavelength of 1310/1550nm, 1310/1550nm, 1550nm and 1610nm, the OTDR meter ensures a long measurement range of 0-60km, very high in accuracy and reliability. 4. Practical Use: Allows for wide application in testing Ethernet cable distance, rj45 Ethernet cable sequence, LED light and so on, the optical tester will surely satisfy your various working needs. 5. Easy Carrying: Light in weight and compact in size as well, the optic fiber tester is very simple to carry for both indoor and outdoor works. Specification: Item Type: Optical Time Domain Reflectometer Model: AUA280U Joint Type: UPC OPM: -70~+10dBm Material: ABS Wavelength: 1310/1550nm (24/22dB), 1310/1550nm (26/24dB), 1550nm (20dB), 1610nm (20dB) Product Voltage: 100-240V Input Voltage: 8.4V 0.5-1A Dynamic Range: 24/22dB, 26/24dB, 20dB Measuring Distance: Approx. 0 ~ 60000m / 0 ~ 196850.39ft Fibre Optic Connector Type: 9/125 ??m SM Test Type: FC/PC; SC/PC??FC/APC SC/APC -Optional?? Unit: meter, inch, mile. Reflection Blind Area: Approx. 2m / 6.56ft Data Storage: 200 Groups Display: 3.97in Resolution: 800 x 480 pixels IPS touch screen. Power Supply: 7.4V 4400mAh lithium ion battery, shipped with built in battery, can be used for more than 5000 times. Visual Fault Locator: Wavelength: 650nm Output Power:>=10mW Mode: CW, 1Hz, 2Hz Optical Fibre Type: SM, MM Optical Power Meter: Measuring Range: - 70~+10dBm Wavelength Range: 800-1650nm Calibration Wavelength: 850/1300/1310/1490/1550/1625 Detection Type: InGaAs Connector: Replaceable FC/PC SC/PC (ST as Optional). Optical Light Source: Emitter: FP-LD Wavelength: 1310/1550nm Connector: FC/PC (SC/ST as Optional) Output Power: ?? -5dBm Fibre Type: SM. Package List: 1 x Optical Time Domain Reflectometer3 x User Manual1 x Cleaning Swab Pack1 x CD1 x Lanyard1 x SC Connector1 x FC Connector1 x USB Cable1 x Power Cord1 x Storage Bag