Omron E3T-SR41 2M Retro-Reflective Photoelectric Sensor
Omron E3T-SR41 2M is an ultrathin retro-reflective photoelectric sensor designed for object sensing across a 30 to 200 mm range. A red LED sends light toward the reflector, while the built-in amplifier processes changes in the returned optical path. The NPN output transfers the switching state to compatible PLC inputs and control circuits, and Light-ON operation defines the specified output behavior. The sensor operates from 12 to 24 VDC, consumes up to 20 mA, and includes a 2 m pre-wired cable. Its compact square format supports restricted mounting areas. Within the E3T Series, the E3T-SR41 2M provides the NPN Light-ON option. Related compact retro-reflective sensors can be reviewed across the Omron Sensor Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SR41 2M |
Omron E3T-SR41 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Shape | Square type |
| Sensing Distance | 30 to 200 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre-wired cable length 2m |
| Current Consumption | 20 mA max |
| Light Source (Wavelength) | Red LED |
| Operation Mode | Light-ON |
| Response Time | 1 ms max. |
| Degree Of Protection | IP67 |
| Material | Polybutylene terephthalate |
| Material Lens | Denatured Polyarylate |
| Weight | 20g |
The Omron E3T-SR41 2M Photoelectric Sensor uses retro-reflective sensing across a specified 30 to 200 mm range in an ultrathin square body. A red LED sends light toward the reflector, while the built-in amplifier processes changes in the returned optical path. The NPN output transfers the switching state to compatible PLC inputs and machine-control circuitry, and Light-ON operation defines the specified output logic. The sensor operates from 12 to 24 VDC and consumes up to 20 mA. Operate or reset time is 1 ms max., and a 2 m pre-wired cable provides the electrical connection. The compact format supports short-range reflector-based sensing where available mounting space is limited.
For an Omron retro reflective NPN photoelectric sensor requiring 30 to 200 mm sensing and Light-ON operation, the relevant model is the E3T-SR41. Polybutylene terephthalate is listed for the housing and denatured polyarylate for the optical section. IP67 protection is specified, while approximate weight is 20 g. Its configuration also suits searches for an Omron 200 mm retro reflective sensor and Omron compact NPN sensor. The 1 ms response supports object presence and position switching in compact equipment. For the related 5 m cable version with the same sensing range and logic, see E3T-SR41 5M.
