Omron E3T-SR42 5M Retro-Reflective Photoelectric Sensor
The Omron E3T-SR42 5M Photoelectric Sensor is an ultracompact, ultrathin photoelectric sensor with built-in amplifier designed for precise object detection. This retro-reflective sensor supports a 30 to 200 mm sensing distance, NPN output, and operates on a 12 to 24 VDC power supply using a Red LED light source in Dark-ON mode. Manufactured by Omron, it belongs to the Omron Photoelectric Sensors category and is part of the Omron E3T Series.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SR42 5M |
Omron E3T-SR42 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 | Dark-ON |
| Response Time | 1 ms max. |
| Degree Of Protection | IP67 |
| Material | Polybutylene terephthalate |
| Material Lens | Denatured Polyarylate |
| Weight | 20g |
The Omron E3T-SR42 5M is an ultracompact retro-reflective photoelectric sensor engineered for space-constrained automation systems. As an ultrathin photoelectric sensor with built-in amplifier, it delivers stable detection using a Red LED light source and supports NPN transistor output for seamless PLC integration. The sensor operates reliably within a 30 to 200 mm sensing range under Dark-ON logic.
In industrial applications, the E3T-SR42 5M photoelectric sensor is commonly used in packaging machines, electronic assembly lines, conveyors, and compact automation equipment. Its retro reflective sensing principle allows accurate detection of objects with consistent response, even in limited mounting spaces. The pre-wired 5-meter cable simplifies installation in control panels and machine frames.
The Omron E3T-SR42 5M photoelectric sensor is designed for long-term industrial use with stable electrical performance and compact mechanical construction. Operating on 12β24 VDC, it supports reliable sensing in continuous-duty environments. As part of the E3T Series, this ultrathin photoelectric sensor is recognized for consistent performance, easy integration, and suitability for modern factory automation systems.
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