Omron E3S-R2E41 Photoelectric Sensor
Omron E3S-R2E41 is a retro-reflective photoelectric sensor for object sensing across a range of 0.1 to 2 m. Its 950 nm infrared LED directs light toward the reflector, while the returned optical signal determines whether the output changes state. The sensor operates from 12 to 24 VDC and uses a pre-wired cable for electrical connection. Light-ON or Dark-ON operation can be selected to suit the required switching logic, while red light and green stability indicators provide visual operating information. Current consumption is 40 mA maximum and response time is specified at 1 ms. Within the E3S Series, the E3S-R2E41 provides the 0.1 to 2 m configuration. Explore 2 m retro-reflective photoelectric sensors across Omron Sensing Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3S-R2E41 |
Omron E3S-R2E41 Photoelectric Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Sensing Distance | 0.1 to 2 m |
| Standard Sensing Object | Opaque: 30- mm dia. min. |
| Light Source | Infrared LED (950 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Connection Method | Pre-wired cable |
| Current Consumption | 40 mA max. |
| Control Output | Output current: 1.5 to 4 mA, Load current: 80 mA max. (residual voltage: 2 V max.) |
| Operation Mode | Light-ON/Dark-ON (selectable) |
| Response Time | Operate or reset: 1 ms max. |
| Sensitivity Adjustment | With an indicator |
| Indicators | Light indicator (red), Stability indicator (green) |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: −25 to 55°C, Storage: −40 to 70°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΩ min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | 500 m/s2 3 times each in X, Y, and Z directions |
| Degree Of Protection | IEC IP67 |
| Material | Zinc die-cast, Polycarbonate, Iron |
The Omron E3S-R2E41 Photoelectric Sensor uses retro-reflective sensing across a range of 0.1 to 2 m. Its 950 nm infrared LED sends light toward the reflector, while changes in returned light provide the switching information when an object enters the sensing path. The sensor operates from 12 to 24 VDC and uses a pre-wired cable for electrical connection. Current consumption is specified at 40 mA maximum, while output current is listed from 1.5 to 4 mA and load current up to 80 mA. Light-ON or Dark-ON operation can be selected according to the required control logic. Operate or reset time is specified at 1 ms maximum, and red light plus green stability indicators provide visual operating information.
For an Omron infrared retro reflective sensor requiring a 2 m maximum working distance and pre-wired connection, the relevant model is the E3S-R2E41. The stated sensing target is an opaque object with a minimum diameter of 30 mm. Ambient-light resistance reaches 3,000 lx under incandescent light and 10,000 lx under sunlight. Operating temperature extends from -25 to 55°C, while storage ranges from -40 to 70°C. Zinc die-cast, polycarbonate, and iron are among the specified materials. Its configuration also suits searches for an Omron 12 to 24 VDC retro sensor and Omron 1 ms reflector sensor. For another E3S retro-reflective option with the same working distance, see E3S-R2E4.
