Features: This six-in-one fiber testing tool combines a fiber identifier, light power meter, 30mW red light source, RJ45 tester, LED light, and RJ45 line finder, addressing various fiber testing requirements. Includes a light power meter with a measurement scope of -70 to +10dBm and a 30mW red light source, enabling detection of fiber lines up to 10 kilometers, perfect for extended maintenance and issue resolution. For straightforward use with a "PRESS TO TEST" control and multiple function controls like "VFL" and "LED", facilitating quick and simple testing and function changes. Equipped with a rechargeable battery (800mAh, 3.7V), reducing the need for frequent battery changes, making it sustainable and economical for prolonged use in outdoor or data center applications. Ideal for fiber networking installation, maintenance, and fault diagnosis, this tool is essential for communication services, networking engineering firms, and corporate IT departments. Specifications: Component: ABS. Size: 243x50x50mm. Red light test wavelength: 650nm. Red light output power: ≥30mW. Data storage: Internal:>99 items. Charging model: battery 800mAh (3.7V). Operating temperature (℃): -10-+60℃. Package Includes: 1 Set 6 in 1 Cable Tester note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.