Omron E3T-ST12M 5M Ultracompact Through-Beam Photoelectric Sensor
Omron E3T-ST12M 5M is an ultracompact through-beam photoelectric sensor designed for 1 m object sensing with a longer pre-wired connection. Its red LED forms the optical path between the separate emitter and receiver, while the NPN output operates in Dark-ON mode for compatible control circuits. The sensor accepts 12 to 24 VDC, provides a 1 ms response time, and includes a 5 m pre-wired cable. Total current consumption is specified at 30 mA maximum, divided between the 10 mA emitter and 20 mA receiver. Within the E3T Series, the E3T-ST12M 5M provides the extended-cable NPN option. Similar compact through-beam sensors can be reviewed across Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-ST12M 5M |
Omron E3T-ST12M 5M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Square type |
| Sensing Distance | 1 m |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| 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-ST12M 5M Photoelectric Sensor uses through-beam sensing across a 1 m distance with separate transmitting and receiving units. A red LED forms the optical path, while the NPN output operates in Dark-ON mode for compatible control circuitry. The sensor operates from 12 to 24 VDC and provides a 1 ms response time. Combined current consumption is specified at 30 mA maximum, with 10 mA for the emitter and 20 mA for the receiver. A 5 m pre-wired cable provides additional wiring length for installations where the sensing position is farther from the control equipment. The square ultracompact format supports mounting where available space is limited, while the stated enclosure protection is IP67.
For an Omron NPN through beam sensor requiring a 1 m range, Dark-ON operation, and extended cable length, the relevant model is the E3T-ST12M. The supplied specification lists PBT and denatured polyarylate as housing materials and a total weight of approximately 40 g. The model also matches searches for an Omron 5 m cable photoelectric sensor and Omron ultracompact NPN sensor. Its 12 to 24 VDC input and 1 ms response support compact machine-control applications requiring quick beam-state switching. For a related PNP Light-ON model with the same 5 m cable length, see E3T-ST13 5M.
