Optimize fiber testing: Improve your network testing accuracy with our fiber OTDR launch box. It effectively eliminates blind spots and ensures accurate measurements. High-precision fiber testing: This 1000-meter fiber extension cable is designed for use with an optical time domain reflectometer (OTDR) to improve the accuracy of fiber testing. It is perfect for extending your test range, ensuring full coverage and accurate results. Length: Available in 1000M length, it meets various testing scenarios and needs. Wide application: This OTDR launch cable is ideal for telecommunications, cable TV and network maintenance, and is a must-have component for all fiber professionals. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Specifications:B:SC/UPC-LC/UPC Colour:Yellow Material:Plastic Package Contents: 1 * Fiber Optic OTDR Launch Cable Box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.