The IDEC SA2E-NN3-2M is a small-beam reflective photoelectric sensor designed for high-speed detection with a rapid 0.5ms response time. It features an NPN output and a red LED for easy status monitoring, along with a 2-meter cable for flexible installation. This sensor is particularly suitable for use in cold storage warehouses due to its robust design. Additionally, it includes a built-in reverse-polarity protection circuit to prevent damage from incorrect wiring, ensuring reliable operation and longevity.