Omron E3T-SL12M 2M Ultracompact Photoelectric Sensor
Omron E3T-SL12M 2M is an ultrathin limited-reflective photoelectric sensor designed for short-range object sensing from 5 to 15 mm. A red LED provides the optical source, while the built-in amplifier processes light returned from the target. The NPN output transfers the switching state to compatible PLC inputs and control circuits, and Dark-ON operation defines the specified logic. The sensor operates from 12 to 24 VDC, consumes up to 20 mA, and includes a 2 m pre-wired cable. Within the E3T Series, the E3T-SL12M 2M provides the compact Dark-ON option. Its compact format supports restricted mounting areas. Related limited-reflective photoelectric sensors are available across Omron Sensors.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SL12M 2M |
Omron E3T-SL12M 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Limited Reflective |
| Shape | Square type |
| Sensing Distance | 5 to 15 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre-wired cable length 2m |
| Current Consumption | 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 | 20g |
The Omron E3T-SL12M 2M Photoelectric Sensor uses limited-reflective sensing across a short 5 to 15 mm range in an ultrathin square body. A red LED directs light toward the target, while the built-in amplifier processes the returned optical signal. The NPN output transfers the switching state to compatible PLC inputs and machine-control circuitry, and Dark-ON operation defines the specified output logic. The sensor operates from 12 to 24 VDC and consumes up to 20 mA. Operate or reset time is specified at 1 ms max., and a 2 m pre-wired cable provides the electrical connection. The compact body supports close-position sensing where available mounting area is limited.
For an Omron Dark ON limited reflective sensor requiring NPN output and 5 to 15 mm sensing, the relevant model is the E3T-SL12M. Polybutylene terephthalate is listed for the housing, while denatured polyarylate is specified for the optical section. IP67 protection is stated, and approximate weight is 20 g. Its specification also suits searches for an Omron short range NPN sensor and Omron ultrathin reflective sensor. The 1 ms response supports part presence, edge confirmation, and close-range position sensing in compact equipment. For the related Light-ON version using the same 5 to 15 mm range and 2 m cable, see E3T-SL11M 2M.

