FSW14M05F is a 1×4 (4×1) optical switch developed by Guangzhou Ruid Electronic Technology Co., Ltd., utilizing step-index multimode fiber and specially designed for the visible light band of 405–640 nm. This product adopts precision micro-electromechanical or solid-state optical switching technology to achieve fast and reliable optical path switching between one input channel and four output channels. It is suitable for high-precision applications requiring dynamic multi-channel optical path selection, such as industrial inspection, biomedical imaging, spectral analysis, laser beam splitting, and scientific research experiments.