中文介绍
E3S-R2N2光电开关是一款由上海双旭电子有限公司生产的高性能光电检测设备。该产品采用反馈反射式检测方式，能够有效检测距离达2米±10%的物体。其电源电压为直流型，输出类型为NPN，且为常闭（NC）动作模式。这种设计使其在工业自动化生产线上能够稳定地检测物体的存在与否，广泛应用于物料输送、机械手臂控制、包装设备等场景。
E3S-R2N2光电开关具有紧凑的外形尺寸，便于安装在各种设备上。其外壳坚固耐用，能够适应不同的工业环境，包括灰尘、湿度等较为恶劣的条件。此外，该光电开关还支持多种安装方式，用户可以根据实际需求灵活选择。
在价格方面，E3S-R2N2光电开关在市场上具有较高的性价比。其价格合理，能够满足不同规模企业的采购需求。同时，上海双旭电子有限公司作为专业的生产厂家，能够提供稳定的产品供应和完善的售后服务。

English Introduction
The E3S-R2N2 photoelectric switch is a high-performance photoelectric detection device produced by Shanghai Shuangxu Electronics Co., Ltd. It features a retro-reflective detection method, capable of effectively detecting objects at a distance of up to 2 meters ±10%. With a direct current (DC) power supply voltage and an NPN output type, it operates in normally closed (NC) mode. This design enables it to stably detect the presence or absence of objects in industrial automated production lines, making it widely used in material handling, robotic arm control, packaging equipment, and other applications.
The E3S-R2N2 photoelectric switch has a compact form factor, facilitating installation on various types of equipment. Its robust housing can withstand different industrial environments, including dusty and humid conditions. Moreover, the switch supports multiple installation methods, allowing users to choose flexibly according to their specific needs.
In terms of pricing, the E3S-R2N2 photoelectric switch offers high cost-effectiveness in the market. It is reasonably priced to meet the procurement requirements of companies of different sizes. Meanwhile, as a professional manufacturer, Shanghai Shuangxu Electronics Co., Ltd. can provide stable product supply and comprehensive after-sales service.