The HAILE HJ-LCY-03 LC/UPC Yin and Yang Attenuator combines a precise 3dB attenuation capability with a reliable male-to-female adapter flange. Its compact and durable design guarantees stable fiber optic connections while effectively balancing optical power levels. Basic types of fixed attenuation include single mode, dual window and multimode in D4/PC, FC, FC/UPC, MU, SC, SC/APC and UPC, ST and ST/UPC style connectors. Optical attenuators usually work by. The new 2025 sc type attenuator offers a wide range of 1db to 25db options, making it suitable for various applications including optical communication and fiber optic networksFeatures a male-female plug-and-play design for easy installation, making it ideal for network engineering, data centers. Fiber Optic Attenuator is one kind of optical passive device which is used to debug the performance of the optical power in the optical communication system,debugging fiber optic instrument calibration correction, optical signal attenuation. And used for the attenuation of the input optical power. 10pcs SC APC Yin-Yang 0~30dB Fixed Fiber Optic Attenuator The Yin-Yang Type Fiber Optic Fixed Attenuator is a type of connector that has one end as an adapter and the other end as a connector. The attenuation value is adjustable.