- Portable and Lightweight: Designed with a non-metallic structure and no welded joints, this expansion box is easy to carry, making it ideal for transport to various testing locations. - Eliminate Dead Areas: This extension cable effectively reduces strong light reflections and pulse width issues when connecting the OTDR to the tested circuit, ensuring accurate and reliable results. - Versatile Applications: Perfect for a wide range of testing scenarios, this expansion box is an essential tool for professionals in the fiber optics industry, whether for field testing or laboratory use. - Excellent Sealing Performance: Built to be explosion-proof, this expansion box offers exceptional durability and reliability, ensuring it performs well under demanding conditions. Specific Use Scenarios: 1. Field Testing: Easily transport the expansion box to remote locations for on-site testing without the added weight. 2. Laboratory Settings: Utilize the extension cable in controlled environments to obtain precise measurements without interference. 3. Fiber Optic Installations: Use this tool to connect OTDRs to fiber circuits during installation and maintenance for optimal performance. With its robust design and functionality, this expansion box meets the needs of professionals seeking reliability and precision in their testing equipment.