Omron E3T-ST22MF 2M Ultracompact Photoelectric Sensor
Omron E3T-ST22MF 2M is an ultracompact through-beam photoelectric sensor designed for 300 mm target sensing with NPN output and Dark-ON operation. Its red LED establishes the optical path between the emitter and receiver, while the built-in amplifier processes the change produced when the beam is interrupted. The resulting switching state is transferred to compatible control circuitry through the NPN output. Operating voltage is 12 to 24 VDC, and a 2 m pre-wired cable provides the electrical connection. Total current consumption is specified at 30 mA maximum, consisting of 10 mA maximum for the emitter and 20 mA maximum for the receiver. Within the E3T Series, the E3T-ST22MF 2M provides the MF Dark-ON configuration. Similar 300 mm NPN sensors can be explored across the Omron Sensor Range.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-ST22MF 2M |
Omron E3T-ST22MF 2M 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 | NPN |
| Connection Method | Pre-wired cable length 2m |
| 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-ST22MF 2M Photoelectric Sensor uses through-beam sensing across a 300 mm distance with NPN output and Dark-ON operation. A red LED establishes the sensing path between the emitter and receiver, while the integrated amplifier processes the optical change created when the beam is interrupted. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable for electrical connection. Total current consumption is specified at 30 mA maximum, consisting of 10 mA maximum for the emitter and 20 mA maximum for the receiver. Response time is listed at 1 ms maximum. Its ultracompact square construction supports use where the available mounting area is restricted.
For an Omron compact through-beam sensor requiring NPN output and Dark-ON logic, the relevant model is the E3T-ST22MF. The supplied data identifies the MF model designation but does not provide an additional specification explaining the suffix, so no extra characteristic has been assigned to it. PBT and denatured polyarylate are listed as construction materials, while the stated enclosure protection is IP67. Its specification also aligns with searches for an Omron ultrathin NPN sensor and Omron 300 mm through-beam sensor. For another Dark-ON NPN version using M3 mounting and a 2 m pre-wired cable, see the E3T-ST22M 2M. Both models share the stated 300 mm sensing distance and 12 to 24 VDC operating supply.
