Feature: 1. [Multi Function] This optical fiber tester has 9 functions, including OTDR, event map, optical power meter, red light source, stable light source, optical loss test, LED light, RJ45 cable testing and finding. 2. [Auto Test and Analysis] This fiber optic OTDR tester allows for one key testing and automatic data analysis, eliminating the need for complex manual operations. 3. [Wide Application] Ideal for FTTx and access network construction and maintenance, this device accurately identifies fiber faults, measures cable length, and calculates relative optical power loss. 4. [Wide Testing Range] The OTDR can measure a wide range of optical fiber networks, including long distance optical fiber networks and distributed optical fiber sensor networks. 5. [4.3 Inch Touch Screen] Equipped with a 4.3 inch LCD touch screen, this OTDR offers clear display and intuitive operation, ensuring ease of use for technicians. Specification: Item Type: Optical Time Domain Reflectometer Material: ABS Model: AUA513A Feature: Can test with light Connector Model: APC Optical Power Meter: -50 to +26dBm Stable Light Source: 1310nm Test Range: 80km Four Languages Can Be Switched: Chinese, English, Portuguese, Spanish Save Test Data: 100,000 sets (with 32GB memory card) Display: 4.3 inch 800x480P IPS capacitive LCD touch screen Power Supply: 7.4V 2200mah polymer lithium battery x 2 (built in) Rj45 Receiver Power Supply: 9V6F22 battery x 1 (not included) VFL Interface: 2.5mm universal SC FC ST OTDR Stable Light Source Interface: Can be freely replaced with SC APC, FC APC 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 Reflectometer1 x User Manual1 x USB Cable1 x RJ11 Crocodile Clip Cable1 x Power Cable1 x FC Adapter (Installed On The Machine)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 Cable1 x FC to LC Adapter