The Panasonic CX-400 series photoelectric sensors represent a significant advancement in sensor technology, combining reduced power consumption with robust performance. These sensors achieve up to 60% power savings through a custom integrated circuit design, contributing to environmental friendliness. Constructed with durable materials like acrylic and polycarbonate, they exhibit excellent resistance to oil, coolants, and ethanol, making them ideal for use in metal processing and food processing machinery. Features include advanced optical systems for detecting small differences and polarizing filters for stable sensing on specular objects. The CX-491 model, in particular, offers remarkable penetrating power and the ability to sense differences as small as 0.4 mm.