Omron E3T-ST34F 2M Ultracompact Photoelectric Sensor
Omron E3T-ST34F 2M is an ultracompact through-beam photoelectric sensor with PNP output for sensing targets across a distance of up to 2 m. Its red LED establishes the optical path between the emitter and receiver, while the built-in amplifier processes the beam interruption caused by the target. Dark-ON operation determines the specified switching behavior, and the response time is 1 ms maximum. The sensor operates from 12 to 24 VDC and includes a 2 m pre-wired cable. 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-ST34F 2M provides the PNP Dark-ON configuration. Related PNP through-beam sensors are available across Omron Sensing Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-ST34F 2M |
Omron E3T-ST34F 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Through-beam |
| Shape | Square type |
| Sensing Distance | 2m |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| 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-ST34F 2M Photoelectric Sensor uses through-beam sensing across a 2 m distance with PNP output and Dark-ON operation. A red LED creates the optical path between the emitter and receiver, while the integrated amplifier processes the change caused when a target interrupts that path. The PNP output communicates the resulting switching state to compatible PLC inputs and machine-control circuitry. Operating voltage is 12 to 24 VDC, response time is specified at 1 ms maximum, and a 2 m pre-wired cable provides the electrical connection. Maximum current consumption is 30 mA, with the emitter drawing up to 10 mA and the receiver drawing up to 20 mA. Its square ultracompact format supports installation in restricted machine spaces.
For an Omron through-beam sensor requiring PNP output, Dark-ON operation, and a 2 m working distance, the relevant model is the E3T-ST34F. PBT and denatured polyarylate are listed as construction materials, while the supplied specification states IP67 protection. Its configuration also matches searches for an Omron PNP through-beam sensor and Omron 2 m photoelectric sensor. The separate emitter and receiver create a fixed optical path that is interrupted by the target, making mechanical alignment important during installation. For a related E3T model using NPN output with Dark-ON operation, the same 2 m sensing distance, and a 2 m pre-wired cable, see the E3T-ST32 2M. Output architecture is the main electrical distinction between these configurations.
