Features Good Quality: The OTDR launch cable has excellent sealing performance, waterproof, anti-fouling and explosion-proof. The anti extrusion, anti impact and waterproof materials can provide sufficient protection against collision, scratch and splash, so as to keep the multimeter in good condition. Easy to Carry: There is no welding joint in the middle of the fiber, so it is small, light and easy to carry. You can hang it in your hand at work, or you can easily put it in a tool bag, handbag or backpack. Work Efficiency: Non-metallic structures do not sag, corrode, or conduct electricity. The loss is less than 0.5dBm/km, great guarantee work efficiency. Sealability: The OTDR launch cable has excellent sealing performance. Compact and durable packaging, easy to use on site, prevents fiber damage and ensures accurate results. Make up the Blind Area: The blind area of OTDR is mainly caused by the strong light reflection and pulse width, which will generally extend for hundreds of meters from OTDR. Specification: Condition: 100% Brand New Item Type: OTDR Launch Box Material: Polypropylene Operating Temperature: -40-+55°C Typical Loss: <0.5db (1000m 1310nm) Size (LxWxH): Approx. 23.4 x 13.2 x 6.4cm / 9.2 x 5.2 x 2.5in Weight: Approx. 737g / 26oz Package List: 1 x OTDR Launch Box 1 x Dustproof Bag Note: Please allow 1-3cm error due to manual measurement. Thanks for your understanding.  Package List 1 x OTDR Launch Box 1 x Dustproof Bag