9 in 1 OTDR Optical Time Domain Reflectometer 4.3in Screen VFL RJ45 Receiver Optical Power Meter 1310 1550nm 500A EU Plug 100‑240V Item Type: OTDR Optical Time Domain Reflectometer Material: ABS Connector Type: APC, Not Available With Light Test Dual Wavelength: 1310 Or 1550nm Test Range: 80km Four Languages Can Be Switched: Chinese, English, Portuguese, Spanish Save Test Data: >100000 Groups (Shipped With 32GB Memory Card) Display: 4.3 Inch IPS Capacitive Display, Touch Screen Power Supply: Built In 7.4 V, 2200mah Lithium Polymers Batteries 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 Arbitrarily Replaced Into SC Or UPC, FC Or UPC OPM Optical Power Meter Interface: 2.5mm Universal SC, FC, ST Light Loss Test: FC Or SC Interface Range 0-30dB With Line Seeking Test Function: Can Measure Straight Through Line T568B, Crossing Line T568A