OMRON E3JK-R4M1 Retro-Reflective Photoelectric Sensor 4m Relay Output
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 14 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
The OMRON E3JK-R4M1 is a retro-reflective photoelectric sensor that detects opaque objects when they break the beam between the sensor and its reflector, with a sensing distance of 0 m to 4 m. It uses a red 660 nm LED and a relay output rated up to 3 A, so it can switch loads directly. Typical uses include presence detection, object counting and machine automation.
Specifications
- Sensing method
- Retro-reflective (without M.S.R. function)
- Sensing distance
- 0 m to 4 m
- Standard sensing object
- Opaque, 75 mm dia. min.
- Light source
- Red LED, 660 nm
- Power supply voltage
- 12 to 240 VDC ±10% / 24 to 240 VAC ±10%
- Power consumption
- 2 W DC max. / 2 W AC max.
- Control output
- Relay output
- Load current
- 0 to 3 A
Frequently asked questions
Does this sensor need a reflector?
Yes. As a retro-reflective type, it needs a separate reflector mounted opposite the sensor, and the beam must be broken between the two for detection.
Can it be powered from an Arduino 5 V pin?
No. It needs 12 to 240 VDC or 24 to 240 VAC. Its relay contact (max 3 A) can be wired as a switch to a separate circuit or to a controller input through a suitable interface.
