Feature: 1. ALL IN ONE FUNCTIONALITY: With 9 functions in 1, this OTDR tester includes OTDR, event map, optical power meter, red light source, stable light source, optical loss test, LED light, RJ45 cable test, RJ45 line finder. 2. PRECISE RESULTS: Identify fiber optic break points, measure cable length, and calculate relative light power loss with this optical fiber cable tester, which provides highly accurate readings for professional use. 3. AUTOMATED TESTING: The OTDR fiber optic tester can be tested with one key, automatically analyzing data, without the need for further operations. 4. MAIN PURPOSE: This optical time domain reflectometer is perfect for evaluating FTTx and access network construction and maintenance, which offers high performance testing. 5. WIDE RANGE TESTING: The fiber optic tester can measure the entire range of optic fiber networks, including long distance networks and distributed optic fiber sensing networks. Specification: Item Type: Optical Time Domain Reflectometer Material: ABS Model: AUA 500U Test Attention: No light test allowed Connector Model: UPC Dual Wavelength: 1310 1550nm Test Range: 80km Four Languages Can Be Switched: Chinese, English, Portuguese, Spanish Save Test Data: >100000 sets (with 32GB memory card) Display: 4.3 inch IPS capacitive display screen, touchable Power Supply: 7.4V 2200mAh polymer lithium battery x 2 (built in) Rj45 Receiver Power Supply: 9V6F22 battery x 1 (not included) Plug Voltage: 100-240V Interface: VFL red light source interface (2.5mm universal SC FC ST) OTDR stable light source interface (can be freely replaced with SC UPC, FC UPC) OPM optical power meter interface (2.5mm universal SC FC ST) Light Loss Test: FC SC interface, range 0-30dB With Line Finding Testing Function: Can test straight line T568B and cross line T568A. Package List: 1 x Optical Time Domain Reflectometer (With 32G Memory Card)1 x User Manual1 x USB Cable1 x RJ11 Crocodile Clip Cable1 x Power Cable1 x FC Adapter (Installed On The Device)1 x SC Adapter1 x RJ45 Receiver1 x RJ45 Remote Adapter1 x Storage Bag1 x Strap1 Pack x Cleaning Cotton Swab1 x Headphone1 x RJ45 Test Cable