Features 1、100% brand new and high quality. 2、The Optical Fiber Amplifier(OFA) refers to a all-optical amplifier used in optical fiber communication lines for signal amplification. 3、With sensitivity adjustment switch, output indicator and signal intensity indicator. 4、It belongs to sensor type components, high sensitivity, low delay. 5、Specially suitable for relay amplification for long-distance optical communications. Specification Features: 100% brand new and high quality. The Optical Fiber Amplifier(OFA) refers to a all-optical amplifier used in optical fiber communication lines for signal amplification. With sensitivity adjustment switch, output indicator and signal intensity indicator. It belongs to sensor type components, high sensitivity, low delay. Specially suitable for relay amplification for long-distance optical communications. Specification: Model: YIBO-NA11 Sensing mode: Light sensation Voltage: DC 12-24V (brown-positive pole, blue-negative pole, black-signal output) Package list: 1 x Optical Fiber Amplifier Package List