Omron E3JK-R4M2 Photoelectric Switch 4 m Retroreflective for Machine Control

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Omron E3JK-R4M2 Photoelectric Switch 4 m Retroreflective

Product Overview

Buy Omron E3JK-R4M2 Photoelectric Switch online. This E3JK Series retroreflective photoelectric device is designed for reliable object detection in industrial automation and machine control systems. It provides a 4 m sensing distance when used with the E39-R1 reflector, Dark-ON operation, and a relay output for integration with industrial control equipment.

The Omron E3JK-R4M2 combines a built-in amplifier, a wide AC/DC supply range, and a compact housing for installation in manufacturing equipment and other industrial applications. Its red LED light source, fixed sensitivity, and IP64 protective structure support dependable use as an automation component in existing electrical equipment, OEM machinery, and replacement parts projects where model compatibility has been verified.

Technical Specifications & Features

Brand: Omron
Manufacturer Part Number: E3JK-R4M2
Category: Photoelectric Switch
Product Series: E3JK
Sensing Method: Retroreflective without M.S.R. function
Sensing Distance: 4 m with E39-R1 reflector
Operation Mode: Dark-ON
Control Output: Relay output, 3 A maximum at 250 VAC, 10 mA minimum at 5 VDC
Supply Voltage: 12 to 240 VDC plus or minus 10 percent; 24 to 240 VAC plus or minus 10 percent
Frequency: 50 or 60 Hz
Power Consumption: 2 W maximum
Light Source: Red LED, 660 nm
Response Time: 30 ms maximum
Sensitivity Adjustment: Fixed
Connection Type: Pre-wired
Material: ABS case, acrylic lens, steel mounting bracket
Dimensions: 50 x 50 x 17.4 mm
Weight: Approximately 250 g packed
Operating Temperature: -25 to 55 degrees C
Protection Rating: IEC 60529 IP64
Included Accessories: Mounting bracket, screws, nuts, instruction manual, and E39-R1 reflector

The built-in amplifier and broad power supply compatibility simplify integration into industrial control circuits. The relay output supports direct interface requirements within the published load limits, while the compact enclosure helps conserve installation space.

Its IP64 construction and specified industrial operating temperature range make the E3JK-R4M2 suitable for stable detection tasks in factory environments. The supplied reflector and mounting hardware support straightforward installation and maintenance replacement.

Applications

The Omron E3JK-R4M2 is used for presence detection, position confirmation, product counting, and object monitoring in industrial automation, conveyor systems, packaging machines, assembly equipment, and general machine control. It can interface with PLC systems, control panels, and other automation components through its relay output.

This photoelectric switch is also suitable for OEM equipment service, industrial control upgrades, manufacturing equipment maintenance, and replacement parts requirements. Confirm the sensing method, wiring, operating mode, supply voltage, and mechanical fit before installation in electrical equipment or other industrial applications.

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