Feature:1. Multiple in 1 Design: Can be used as optical time domain reflectometer, optical power meter, stable light source, FIP and visual fault locator, RJ45 tester and so on.2. Simple Operation: Equipped with 3.5in 800 x 480 IPS TFT LCD, the optical time domain reflectometer OTDR is very simple to operation for testing and measurement.3. Smart Testing: 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.4. Wide in Range: OTDR optical time domain reflectometer can measure a wide range of fiber optic networks, including long distance fiber optic networks and distributed fiber optic sensing networks.5. Easy Carrying: Comes with a compact size and a light weight as well, the OTDR is very convenient to carry for both indoor and outdoor use.Specification:Item Type: Optical Time Domain ReflectometerModel: QX55-PWavelength: PON 1310nm, 1550nm, 1625nm, with built in filter. Dynamic Range: 32dB, 30dB, 28dB. Fiber Optic Interfaces: 2pcsApplicable Optical Fiber: For SM ITU-T G.652. Measurement Range: 0.5km, 1km, 2km, 5km, 10km, 20km, 35km, 50km, 75km, 100km, 150km, 200km. Pulse Width: 5ns, 10ns, 20ns, 50ns, 100ns, 200ns, 500ns, 1000ns, 2000ns, 10000ns, 20000ns. Event Blind Spot x 1: 1mAttenuation Blind Spot x 2: 3.5mSampling Points: Up to 80,000. Sample Resolution: 0.04m minimum. Distance Measurement Accuracy: (0.75m + measurement distance x 2 x 10 - 5 + sampling point resolution). Loss Accuracy: 0.03dBReflection Accuracy: 2dBOptical Power Meter Module (built in function): NoOPM: Wavelength: 800-1650nmMeasurement Range: -70~+6dBmMeasurement Accuracy: <( 0.2dB0r 5%)Display Resolution: 0.01dBBuilt in Fiber Optic Interface: SC/UPC and 2.5mm universal connector. Stable Light Source Module (built in function): YesSLS: Length: 1310nm, 1550nm. Output Power: -10dBmModulation Frequency: CW, 270Hz, 1kHz, 2kHz. Laser Safety Level: Class 1M or Class 1. Built in Fiber Optic Interface: OTDR Optical PortRed Light Source Module (built in function): YesVFL: Wavelength : 650nmOutput Power: 10mWModulation Mode: CW, CHOP, 2Hz. Laser Safety Level: Class 3RBuilt in Fiber Optic Interface: 2,5mm universal connector, Wang FC.SCST. Fiber Optic End Face Detection Module (built in function): OptionalFIP: Magnification: 250XResolution: 1.0umCommunication Interface: USB 2.0Fiber Optic Interface: FC/UPC, SC/UPC, ST/UPCCMOS Size: 1/3inNetwork Testing Module (built in function): YesRJ45: Applicable Network Cables: For CAT5, CAT6Line Length: Approx. 300m / 984.25ftMaximum Audio Transmission Distance: Approx. 300m / 984.25ftFiber Optic Interface: SC/UPC. FC/UPC, LC/UPC optional. Display Screen: 3.5in color LCD screen with 640 x 480 resolution. Working Temperature: -10-50. 0-40 for use with power supply, 0-35 for battery charging. Storage Temperature: -20-60Altitude: 4000m.Humidity: 0-90%RH at 2090% 739874 AC adapter, frost free. Power Supply: 100-240V AC, 50/60Hz, with AC adapter. Battery: 1 x lithium battery, 3000mAh. Shipped with built in battery. LED Light: >15000mcd. Data Storage: Memory: 1000 test curves. External Storage: USB. .Package List:1 x Carrying Bag1 x Optical Time Domain Reflectometer1 x Charger1 x Bag Strap1 x User Manual1 x Optical Fiber Connector