漫反射式光电开关带背景遮蔽功能，使用可见红色光源帮助对准，开关点可调校。
W100是一整套光电开关系列，机器内置在小巧的外壳内，却能以低成本完成长距离的检测！方便的细节简化了安装、操作启动和维护控制，例如：灵敏度调节；亮通/暗通开关。
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