德國SCHMERSAL接近開關的設計及工作原理：
    施邁賽接近開關是不通過接觸就能使開關動作的裝置。接近開關能夠檢測進入到它們感應區域內的物體。這些產品均一體化結構，包括有區域信號發生器，放大器和其他必要的電路。

    德國原裝SCHMERSAL接近開關是種開關型傳感器（即無觸點開關），它既有行程開關、微動開關的特性，同時具有傳感性能，且動作可靠，性能穩定，頻率響應快，應用壽命長，抗干擾能力強等、并具有防水、防震、耐腐蝕等特點。產品有電感式、電容式、霍爾式、交、直流型。

    上海維特銳直接從德國SCHMERSAL原廠家拿貨，直接供應各種SCHMERSAL感應傳感器，施邁賽磁性開關，施邁賽安全開關

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