Omron E3FA-DP22 Diffuse Photoelectric Sensor
The E3FA-DP22 is an Omron Diffuse Photoelectric Sensor engineered for precise non-contact object detection in industrial automation environments. Designed with a cylindrical M18 housing, this sensor delivers a reliable 300 mm diffuse-reflective sensing distance using a red LED light source and supports both Light-ON and Dark-ON operation modes. It features a PNP output, a standard M12 connector, and operates across a wide 10 to 30 VDC power supply range for easy integration into control systems. Manufactured by Omron, the E3FA-DP22 is part of the Omron Photoelectric Sensors, developed for stable optical performance and robust industrial use.

| Brand | Omron |
| Product | Photoelectric Sensor |
| Model Number | E3FA-DP22 |
Omron E3FA-DP22 Diffuse Photoelectric Sensor â Technical Overview
| Specification | Value |
|---|---|
| Sensing Method | Diffuse reflective |
| Sensing Distance | 300 mm |
| Output | PNP |
| Connection Method | M12 Connector |
| Operation Mode | Light-ON / Dark-ON |
| Light Source | Red LED |
| Response Time | 0.5 ms |
| Power Supply | 10 to 30 VDC |
| Degree of Protection | IP67 / IP69K |
| Material | ABS |
The Omron E3FA-DP22 is widely recognized as a diffuse photoelectric sensor designed for consistent and accurate object detection in industrial automation systems. With a fast 0.5 ms response time and a PNP output configuration, the sensor provides reliable switching performance in high-speed production environments. Its 300 mm diffuse-reflective sensing range allows dependable detection of objects without requiring a separate reflector.
In industrial applications, the E3FA-DP22 photoelectric sensor is commonly used in conveyor systems, packaging machines, assembly lines, and inspection stations where space-efficient and non-contact sensing is required. The M18 threaded cylindrical body ensures secure mechanical mounting, while the M12 connector enables quick and stable electrical connection within control panels. The IP67/IP69K protection rating supports operation in dusty, wet, and washdown environments.
Designed for long-term operational reliability, the Omron E3FA-DP22 operates on a 10 to 30 VDC supply with low current consumption and stable optical output. Its red LED light source and selectable Light-ON/Dark-ON modes support accurate sensing across varying object colors and surface conditions. This makes the sensor suitable for continuous industrial operation requiring dependable diffuse photoelectric detection.