product manual: The male-female adapter adapter uses a pre-embedded fiber and fiber ferrule adapter sleeve technology to convert one type of fiber connector (male) into another fiber connector (male) or one Various types of fiber optic connector interfaces (female) are converted into another type of fiber optic connector interface (female), which has the characteristics of small size, stable optical characteristics, and simple use. It is widely used in fiber optic equipment instrument testing and engineering. Rescue construction and other fields.