Omron E3T-ST24 5M Ultracompact Photoelectric Sensor
Omron E3T-ST24 5M is an ultracompact through-beam photoelectric sensor using PNP output and Dark-ON operation for sensing targets over a 300 mm distance. Its red LED establishes the optical beam between the emitter and receiver, while the built-in amplifier evaluates the change produced when a target interrupts the beam. The PNP output communicates the resulting switching state to compatible industrial control inputs. Operating voltage is 12 to 24 VDC, and the model includes a 5 m pre-wired cable for extended wiring requirements. Current consumption is specified at 30 mA maximum, including 10 mA maximum for the emitter and 20 mA maximum for the receiver. Within the E3T Series, the E3T-ST24 5M provides the long-cable PNP version. Related compact PNP photoelectric sensors can be reviewed across Omron Sensing Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-ST24 5M |
Omron E3T-ST24 5M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Square type |
| Sensing Distance | 300mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| Connection Method | Pre-wired cable length 5m |
| Current Consumption | 30 mA max. (Emitter 10 mA max., Receiver 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 | 40g |
The Omron E3T-ST24 5M Photoelectric Sensor uses through-beam sensing over a 300 mm distance with PNP output and Dark-ON operation. A red LED forms the optical path between the emitter and receiver, while the built-in amplifier evaluates the change produced when a target interrupts that beam. The PNP output then supplies the switching state to compatible control equipment. The sensor operates from 12 to 24 VDC and includes a 5 m pre-wired cable for applications requiring additional connection length. Response time is specified at 1 ms maximum. Total current consumption is 30 mA maximum, including 10 mA maximum for the emitter and 20 mA maximum for the receiver.
For an Omron PNP through-beam sensor requiring a longer pre-wired cable, the applicable model is the E3T-ST24. The M2-mounting ultracompact format supports installation in narrow equipment layouts, while Dark-ON operation provides the stated switching behavior. The supplied specification lists PBT and denatured polyarylate construction and IP67 enclosure protection. Search terms such as Omron 5 m PNP sensor and Omron 300 mm photoelectric sensor also correspond to this configuration. For the same PNP Dark-ON arrangement with a shorter 2 m pre-wired cable, see the E3T-ST24 2M. The cable length is the primary stated difference between these two E3T-ST24 versions.
