LJ4A3-1-Z/BY 是一款微型电感式接近开关传感器，广泛应用于工业自动化领域。它采用圆柱形金属外壳，直径仅为 4mm，设计紧凑，适合安装在空间受限的设备中。该传感器的工作电压范围为 DC6-36V，检测距离为 1mm，能够稳定检测磁性金属物体，对于非磁性金属物体，检测距离会相应减小。其输出方式为 PNP 三线常开，响应频率高达 0.5kHz，能够满足快速检测的需求。

在性能方面，LJ4A3-1-Z/BY 传感器具备极性反接保护功能，可有效防止因接线错误导致的损坏。其外壳材质为锌管镀铬，具有良好的耐腐蚀性和机械强度。此外，该传感器的环境适应性强，可在 -30℃至 +65℃的温度范围内正常工作。

The LJ4A3-1-Z/BY is a miniature inductive proximity switch sensor widely used in industrial automation. It features a cylindrical metal housing with a diameter of only 4mm, making it suitable for installation in equipment with limited space. The sensor operates on a voltage range of DC6-36V and has a detection distance of 1mm. It can stably detect magnetic metal objects, with the detection distance reduced when detecting non-magnetic metals. The output type is PNP three-wire normally open, with a response frequency of up to 0.5kHz, meeting the needs of rapid detection.

In terms of performance, the LJ4A3-1-Z/BY sensor is equipped with polarity reverse protection to effectively prevent damage caused by incorrect wiring. The housing material is zinc-plated chromium, which offers good corrosion resistance and mechanical strength. Additionally, the sensor has strong environmental adaptability and can operate normally within a temperature range of -30℃ to +65℃.

LJ4A3-1-Z/BY 接近开关传感器由上海双旭电子有限公司生产。该公司在传感器领域拥有多年的经验，专注于研发和生产高质量的接近开关、光电开关等工业自动化产品。其产品以性能稳定、质量可靠著称，广泛应用于机械制造、汽车、电子等多个行业。

LJ4A3-1-Z/BY 接近开关传感器的价格因采购数量、销售渠道等因素而有所不同。根据市场情况，单个产品的价格通常在 20-30 元人民币左右。对于批量采购，价格可能会更具竞争力，具体可与生产厂家或经销商联系获取详细报价。

LJ4A3-1-Z/BY 接近开关传感器凭借其紧凑的设计、可靠的性能和广泛的应用范围，已成为工业自动化领域中不可或缺的检测元件。