Omron E3T-ST12F 2M Ultracompact Through-Beam Photoelectric Sensor
Omron E3T-ST12F 2M is an ultracompact through-beam photoelectric sensor designed for object sensing across a 1 m distance. An infrared LED establishes the optical path between the emitter and receiver, while the built-in amplifier processes beam interruption before the NPN output communicates with compatible control circuits. Dark-ON operation defines the specified switching logic, and response time is 1 ms max. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. Total current consumption is 30 mA max., divided across the emitter and receiver. Within the E3T Series, the E3T-ST12F 2M provides the infrared Dark-ON option. Related infrared photoelectric sensors are available across Omron Automation Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-ST12F 2M |
Omron E3T-ST12F 2M 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 2m |
| Current Consumption | 30 mA max. (Emitter 10 mA max., Receiver 20 mA max.) |
| Light Source (Wavelength) | Infrared 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-ST12F 2M Photoelectric Sensor uses through-beam sensing across a 1 m distance with an infrared optical source. An infrared LED establishes the beam between the emitter and receiver, while the built-in amplifier processes beam interruption before the NPN output transfers the switching state to compatible control circuitry. Dark-ON operation defines the specified output logic. The sensor operates from 12 to 24 VDC and consumes 30 mA max. in total, divided between 10 mA max. for the emitter and 20 mA max. for the receiver. Operate or reset time is specified at 1 ms max., and a 2 m pre-wired cable provides the electrical connection.
For an Omron infrared through beam sensor requiring NPN output, Dark-ON logic, and 1 m sensing, the relevant model is the E3T-ST12F. Polybutylene terephthalate is listed for the housing and denatured polyarylate for the optical section. IP67 protection is stated, while approximate weight is 40 g. Its specification also fits searches for an Omron infrared NPN sensor and Omron Dark ON through beam sensor. The 1 ms response supports object presence and position confirmation in compact automated equipment and machinery. For the related infrared Light-ON version with the same sensing distance, see E3T-ST11F 2M.
