Feature: 1. VERSATILE FIBER OPTIC TESTER: Featuring diverse functions such as fiber communication measurement, network cable sequence, optical power meter, stable light source, VFL, RJ11 line finding, and more. 2. HIGH PERFORMANCE POWER METER: Using for signal power testing, insertion loss testing and more on various devices and optoelectronic components. 3. VISUAL FAULT LOCATION: Accurately locate fiber optic fault points, detect bare fibers, fiber jumpers, and other fibers that can expose red light, as well as identify near end fault points and high loss sections caused by microbends. 4. CLEAR OTDR TEST INTERFACE: Adopting 3.5 inch color LCD screen, displaying fiber and cable loss distribution curves, with clear information on fiber distance, loss, and attenuation. 5. EASY CARRYING: Compact in size, comes with convenient storage bag and portable strap, this optical fiber tester kit is easy to carry around. Specification: Item Type: Optical Fiber Tester Material: ABS Center Wavelength: 1550nm Applicable Fiber Type: Single mode Minimum Event Blind Spot: 10m (single mode) Dynamic Range: 22dB Measurement Range: 0.2, 0.5, 1, 2, 4, 8, 16, 32, 64km Measurement Pulse Width: 3ns, 5ns, 10ns, 30ns, 50ns, 80ns, 160ns, 320ns, 500ns, 1us, 5us, 10us Sampling Point: 64000 Waveform Data Storage Capacity: 500 pieces Refractive Index Setting Range: 1.00000~1.99999 Fiber Optic Cable Correction Factor Range: 0.80000~1.0000 RJ45 Cable Sequence: Test the network cable sequence, use with pairing machine Optical Power Meter Measurement Range: -50dBm to +26dBm VFL Output Power: >10mW RJ11 Line Finding: RJ11 interface emits electrical signals, use with detector LCD Display: 320x480, 3.5 inch color LCD Interface: MicroUSB, small memory card Power Supply: AC DC Adapter, input voltage range: 100~240V (1.5A), frequency allowed range: 50 60Hz, output: DC 5V 1A Interface Language: Simplified Chinese, English Environmental Adaptability: Storage temperature: -40?? to 70??, relative humidity: 5% to 95%, no condensation Size: Approx. 173x82x36mm/6.81x3.23x1.42in External Storage Type: Small memory card (without) Tester Host Battery: Internal lithium battery 3.7V, 4000mAh x 1 (built in), battery working time: 10 hours (room temperature) Line Finder Battery: 9V 6F22 Battery x 1 (without). Package List: 1 x OTDR Optical Fiber Tester (Small Memory Card Not Included)2 x Connecting Cables1 x Crocodile Clip Cable1 x Earphone1 x USB Cable1 x Plug6 x Accessories1 x Cable Stripper1 x Line Finder1 x Storage Bag1 x Portable Strap1 x User Manual