Omron E3FA-RP21 Photoelectric Sensor

The Omron E3FA-RP21 Photoelectric Sensor, part of the trusted Omron E3FA Series, is designed for stable retro-reflective detection in industrial automation environments. Operating on 10–30 VDC with a PNP output, it delivers a 0.1–4 m sensing range when used with the E39-R1S reflector. The integrated MSR (Mutual Interference Suppression) function ensures accurate detection even when multiple sensors operate closely together. Its compact M18 × 45 mm ABS cylindrical body with an IP67/IP69K rating offers superior resistance against water, oil, and dust, making it a dependable solution for environments requiring long Sensing distances and stable performance.

In packaging plants, assembly units, and conveyor-based systems, the Omron E3FA-RP21 Photoelectric Sensor ensures consistent detection of bottles, cartons, and materials. The retro-reflective sensing method simplifies installation by using only a reflector, reducing wiring and maintenance efforts. Its red LED light source provides clear alignment during setup, while the 0.5 ms response time enables reliable operation in fast-moving production lines. With selectable Light-ON/Dark-ON modes, engineers can easily adapt the sensor to different control requirements, ensuring accuracy and flexibility across diverse automation systems.

Manufactured by Omron Corporation—a global leader in sensing and control technologies—the E3FA-RP21 is produced under ISO-certified quality standards to guarantee long-term performance and safety. Engineered with high-grade materials and advanced circuitry, it offers exceptional stability under vibration, temperature variations, and humidity. Maintenance teams and OEMs across India prefer Omron sensors for their consistent results, easy integration, and strong technical support network that ensures minimal downtime and long-term operational reliability in industrial environments.

Within the Omron E3FA Series, the E3FA-RP21 is complemented by related models for varied output and wiring preferences. For NPN output applications, engineers can choose the Omron E3FA-RN21, while the Omron E3FA-RN12 2M offers NPN output with a pre-wired 2 m cable for simplified installation. These models share the same compact cylindrical structure, IP67/IP69K protection, and identical sensing reliability, enabling seamless interchangeability across automation systems and standardized performance for integrators and end users.

The Omron E3FA-RP21 Photoelectric Sensor combines precision, fast detection, and rugged design to ensure stable performance in demanding industrial automation applications. Its M12 connector provides easy wiring, while the MSR function prevents interference between adjacent sensors. Supported by Omron’s global service network and trusted by engineers across India, the E3FA-RP21 remains a preferred choice for reliable, high-speed retro-reflective sensing in modern automated production systems.