Welcome to our store! Features: Supports Six Wavelengths: 850, 980, 1310, 1490, 1550, 1625nm wavelengths, simultaneously displayed on the LCD screen. Compact and Portable: Features a compact size, simple interface, and easy-to-use button operation. Detachable RJ45 Cable Tester: Built-in RJ45 cable tester, detachable, automatically scans and tests network cable sequence. Supported Interface Types: Compatible with various optical interface types, such as FC, SC, and ST. Durable and Illuminating: Equipped with a 700mAh battery for long working hours, and LED lights for use in dark environments. Multiple Functions: Includes cable function (NF 908S), cable continuity test function, fiber break detection, winding detection, etc. Specifications: Item Type: Optical Power Meter Material: ABS Optical Power Meter Battery: 1 x 3.7V Polymer Battery, Battery Capacity: 700mAh Package Includes: 1 x Optical Power Meter 1 x USB Cable 1 x User Manual Satisfaction Guarantee: Customer satisfaction is our top priority. If you encounter any problems with the product, please contact the seller immediately. We strive to provide satisfactory customer service.