Features Function: Optical fiber amplifier (OFA) refers to an all-optical amplifier used for signal amplification in optical fiber communication lines. Including: with sensitivity adjustment switch, output indicator and signal strength indicator, complete accessories, easy to install and connect. Flexible: safe operation, easy to use, fiber amplifier voltage: DC 12-24V, brown positive, blue negative, black signal output. Accuracy: It is a sensor type component, manufactured with precision electronic components, with high sensitivity and low delay. Application: Wide range of applicable scenarios, fiber amplifier is suitable for relay amplification of long-distance optical communication. 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