Omron E3JK-TR12 2M Through-beam Photoelectric Sensor
The E3JK-TR12 2M is a Through-beam Photoelectric Sensor engineered for long-distance and stable object detection in industrial automation environments. This sensor operates with a dedicated emitter and receiver, providing a reliable 5 m sensing distance using a red LED light source (624 nm). It supports a wide 24 to 240 VAC/VDC power supply and features a relay output suitable for direct control of industrial loads. With Light-ON and Dark-ON operation modes and a pre-wired 2 m cable connection, the sensor integrates easily into control panels. Manufactured by Omron, the E3JK-TR12 belongs to the Omron Photoelectric Sensors, recognized for robust construction and dependable optical performance.
| Brand | Omron |
| Product | Photoelectric Sensor |
| Model Number | E3JK-TR12 2M |
Omron E3JK-TR12 2M Through-beam Photoelectric Sensor – Technical Overview
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Emitter | E3JK-TR12-L 2M |
| Receiver | E3JK-TR12-D 2M |
| Sensing Distance | 5 m |
| Output | Relay |
| Connection Method | Pre-wired Cable, 2 m Length |
| Operation Mode | Light-ON / Dark-ON selectable |
| Light Source | Red LED |
| Response Time | 20 ms max. |
| Power Supply | 24–240 VDC / 24–240 VAC, 50/60 Hz |
| Degree of Protection | IP64 |
| Material | ABS |
The Omron E3JK-TR12 2M is widely recognized as an Omron Through-beam Photoelectric Sensor designed for accurate and consistent object detection in industrial automation systems. By separating the emitter and receiver, this sensor achieves stable detection across a 5 m through-beam sensing range, making it suitable for applications requiring reliable long-distance sensing. The relay output configuration supports flexible integration with AC and DC control circuits.
In industrial applications, the E3JK-TR12 2M photoelectric sensor is commonly used in conveyor systems, material handling lines, packaging machinery, and automated inspection stations. Its adjustable sensitivity via a one-turn adjuster allows precise alignment, while tolerance to high ambient light levels ensures dependable performance under factory lighting and sunlight exposure.
Designed for continuous industrial operation, the sensor operates reliably across a wide −25°C to 55°C temperature range and maintains electrical safety with high insulation resistance and dielectric strength. With an IP64-rated ABS housing and stable power consumption for both AC and DC supplies, the E3JK-TR12 Through-beam Photoelectric Sensor supports long-term reliability in demanding automation environments.