9 in 1 Optical Time Domain Reflectometer 4.3in Touchscreen 1610nm OTDR Fiber Optical Tester Breakpoint Finder 100‑240V EU Plug Item Type: OTDR Optical Time Domain Reflectometer Material: ABS Can be tested with light Connector Model: For APC Single Wavelength: 1610nm Test Range: Approx. 80000m / 262467.2ft Four Languages: Chinese, English, Portuguese, Spanish Save Test Data: Greather than 100000 sets (shipped with 64GB memory card) Display: 4.3 inch IPS capacitive display screen touchable Power Supply: Built in 7.4 V, 2200mah polymer lithium battery x 2 (shipped with built in battery) Rj45 Receiver Power Supply: Requires 9V6F22 battery x 1 (shipped without battery) VFL red light source interface (2.5mm universal SC FC ST) OTDR, stable light source interface (can be freely replaced with SC for APC, FC for APC) OPM Optical power meter interface (2.5mm general SC FC ST) Light Loss Test: FC SC interface range 0 to 30dB With Line Finding Testing Function: Test straight line T568B and cross line T568A