TURCK光電開關已被用作物位檢測、液位控制、產品計數、寬度判別、速度檢測、定長剪切、孔洞識別、信號延時、自動門傳感、色標檢出、沖床和剪切機以及安全防護等諸多領域。此外，利用紅外線的隱蔽性，還可在銀行、倉庫、商店、辦公室以及其它需要的場合作為防盜警戒之用。

光電開關是傳感器的一種，它把發射端和接收端之間光的強弱變化轉化為電流的變化以達到探測的目的。由于光電開關輸出回路和輸入回路是電隔離的（即電緣絕），所以它可以在許多場合得到應用。

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