Omron E3T-SL22M 5M Limited Reflective Photoelectric Sensor
Omron E3T-SL22M 5M is an ultrathin limited-reflective photoelectric sensor designed for object sensing from 5 to 30 mm. A red LED supplies the optical light, while the built-in amplifier processes the returned signal from the target. Its NPN output transfers the switching state to compatible PLC inputs and control circuitry, and Dark-ON operation defines the specified logic. The sensor operates from 12 to 24 VDC, consumes up to 20 mA, and includes a 5 m pre-wired cable for additional wiring length. Within the E3T Series, the E3T-SL22M 5M provides the extended-cable NPN version. Related compact reflective sensors are available across Omron Industrial Sensors.

| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SL22M 5M |
Omron E3T-SL22M 5M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Limited Reflective |
| Shape | Square type |
| Sensing Distance | 5 to 30 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | NPN |
| Connection Method | Pre-wired cable length 5m |
| 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-SL22M 5M Photoelectric Sensor uses limited-reflective sensing across a 5 to 30 mm range in an ultrathin square format. A red LED provides the optical source, while the built-in amplifier processes light returned from the target. Its NPN output supplies the switching state to compatible PLC inputs and control circuitry, and Dark-ON operation defines the specified output behavior. The sensor operates from 12 to 24 VDC and consumes up to 20 mA. Operate or reset time is 1 ms max. A 5 m pre-wired cable provides additional connection length between the sensing position and control equipment.
For an Omron Dark ON reflective photoelectric sensor requiring NPN output and longer wiring, the corresponding model is the E3T-SL22M. Polybutylene terephthalate is specified for the housing and denatured polyarylate for the optical section. IP67 protection is stated, with approximate weight of 20 g. Its specification also suits searches for an Omron 5 m cable NPN sensor and Omron 30 mm reflective sensor. The 1 ms response supports short-range presence sensing, positioning, and switching in compact automated equipment. For the shorter-cable version using the same 5 to 30 mm sensing range and Dark-ON operation, see E3T-SL22M 2M.


