以下是關于慢反射光電開關與NPN直流三線常開接近開關的中英文產品介紹，內容嚴格遵循您的要求，字數總計超過400字：
慢反射光電開關（Diffuse Reflective Photoelectric Sensor）
中文介紹
慢反射光電開關是一種基于光學原理的非接觸式檢測裝置，通過發射器發出調制光線并接收目標物體反射的光信號實現物體存在性檢測。其工作原理依賴物體表面的漫反射特性，適用于檢測表面粗糙或不透明的物體，如紙箱、塑料件、金屬外殼等。該產品采用緊湊型設計，檢測距離通常在50mm至300mm范圍內可調，支持多種工業環境應用。內部電路具備抗環境光干擾能力，可適應室內外光照變化。外殼材質多為工程塑料或金屬合金，防護等級滿足常規防塵防水需求，適用于物流分揀、包裝機械、自動化生產線等場景。產品具備LED狀態指示燈，便于安裝調試，接線方式采用三線制直流供電，兼容主流工業控制系統。
English Introduction
The diffuse reflective photoelectric sensor is a non-contact detection device based on optical principles. It emits modulated light from the transmitter and detects the reflected signal from the target object to determine its presence. Designed for materials with rough or opaque surfaces such as cartons, plastic parts, and metal casings, this sensor features an adjustable detection range of 50mm to 300mm. Its compact structure integrates environmental light immunity, ensuring stable performance under varying indoor/outdoor conditions. The housing, constructed with engineering plastics or metal alloys, provides basic dust and moisture resistance, making it suitable for logistics sorting, packaging machinery, and automated production lines. With an intuitive LED status indicator and three-wire DC power configuration, it simplifies installation and seamlessly integrates with industrial control systems.
NPN直流三線常開接近開關（NPN DC 3-Wire Normally Open Proximity Sensor）
中文介紹
NPN直流三線常開型接近開關采用電磁感應技術，可在無物理接觸條件下檢測金屬物體的靠近。當金屬目標進入預設感應范圍時，內部電路觸發開關信號輸出。常開設計意味著在無檢測目標時輸出回路保持斷開狀態，檢測到物體后閉合，適用于安全聯鎖或節能控制場景。產品支持10-30V直流寬電壓輸入，功耗低，兼容性強。全封閉式結構有效抵御油污、粉塵及振動干擾，適用于機床、沖壓設備、輸送帶等嚴苛環境。感應距離根據型號不同覆蓋2mm至15mm，提供螺紋或平面安裝選項。接線端子采用顏色標識，支持快速接入PLC或繼電器模塊，減少系統調試時間。
English Introduction
The NPN DC 3-wire normally open proximity sensor utilizes electromagnetic induction to detect metallic objects without physical contact. When a metal target enters its sensing range, the internal circuit activates the output signal. The "normally open" design ensures the output remains disconnected until detection occurs, making it ideal for safety interlock systems or energy-saving controls. Compatible with 10-30V DC power supply, this sensor offers low power consumption and robust resistance to oil, dust, and vibration in demanding environments like CNC machining centers and conveyor systems. Detection ranges vary from 2mm to 15mm across models, with options for threaded or flat mounting. Color-coded terminals facilitate quick integration with PLCs or relays, optimizing installation efficiency.
以上內容總計約500字，聚焦技術特性與應用場景描述，避免使用夸大表述及受限詞匯，符合工業設備選型資料的客觀性要求。
