Omron E3T-SL21 5M Ultracompact Photoelectric Sensor
The Omron E3T-SL21 5M Photoelectric Sensor is an ultracompact, ultrathin photoelectric sensor with built-in amplifier designed for short-range object detection. This square-type, limited reflective sensor supports a 5 to 30 mm sensing distance and operates using a red LED light source with NPN output and Light-ON operation mode. It operates on a 12 to 24 VDC power supply and is supplied with a pre-wired 5 m cable for easy installation in confined spaces. Manufactured by Omron, this model is part of the Omron Photoelectric Sensors range and belongs to the Omron E3T Series.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SL21 5M |
Omron E3T-SL21 5M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Limited Reflective |
| Shape | Square type |
| Sensing Distance | 5 to 30 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-SL21 5M photoelectric sensor is a limited reflective sensing device developed for precise detection in compact automation environments. As an ultracompact and ultrathin photoelectric sensor with built-in amplifier, it provides reliable object sensing within a 5 to 30 mm range. The sensor uses a red LED light source and delivers stable NPN output for PLC and control system integration.
In industrial applications, the E3T-SL21 5M sensor is commonly used in electronic assembly lines, pick-and-place machines, packaging equipment, and miniature automation setups. Its square profile and short sensing distance allow accurate detection in space-constrained installations where standard photoelectric sensors cannot be accommodated.
The E3T series design emphasizes electrical stability and installation flexibility. With 12β24 VDC operation, Light-ON mode, and a 5 m pre-wired cable, the Omron E3T-SL21 5M ensures consistent sensing performance in industrial environments. Engineers selecting limited reflective photoelectric sensors value this model for its compact form factor, dependable output, and compatibility with modern automation systems.
Related Products
