Omron E3T-SR41 5M Retro-Reflective Photoelectric Sensor
Omron E3T-SR41 5M is an ultracompact retro-reflective photoelectric sensor designed for object sensing across a 30 to 200 mm range. Its red LED establishes the optical path toward a reflector, while the built-in amplifier processes changes in the returned light. The NPN output communicates the switching state to compatible industrial control circuits, and Light-ON operation defines the specified logic. The sensor operates from 12 to 24 VDC, consumes up to 20 mA, and includes a 5 m pre-wired cable for extended wiring. Within the E3T Series, the E3T-SR41 5M provides the long-cable NPN configuration. Related short-range retro-reflective sensors are available across Omron Industrial Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SR41 5M |
Omron E3T-SR41 5M 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 5m |
| 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 5M Photoelectric Sensor uses retro-reflective sensing across a 30 to 200 mm range in an ultracompact square format. Its red LED establishes the optical path toward a reflector, while the built-in amplifier processes changes in the returned light. The NPN output supplies the switching state to compatible industrial control circuitry, and Light-ON operation defines the specified behavior. The sensor operates from 12 to 24 VDC and consumes up to 20 mA. Operate or reset time is 1 ms max. A 5 m pre-wired cable provides additional wiring length between the sensor and control equipment, supporting installations where the connection point is positioned farther away.
For an Omron NPN retro reflective sensor requiring 30 to 200 mm sensing and extended wiring, the corresponding model is the E3T-SR41. Polybutylene terephthalate is specified for the housing and denatured polyarylate for the optical section. IP67 protection is stated, with approximate weight of 20 g. Its specification also matches searches for an Omron 5 m cable retro reflective sensor and Omron compact Light ON sensor. The 1 ms response supports object presence and position confirmation in compact automated equipment. For the shorter-cable version with the same NPN output and sensing range, see E3T-SR41 2M.
