Omron E3T-SR44 2M Photoelectric Sensor
Omron E3T-SR44 2M is an ultracompact retro-reflective photoelectric sensor designed for short-range object sensing from 30 to 200 mm. Its red LED establishes the optical path toward a reflector, while the built-in amplifier processes changes in the returned light. The PNP output communicates 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, consumes up to 20 mA, and includes a 2 m pre-wired cable. Response time is specified at 1 ms max. Within the E3T Series, the E3T-SR44 2M provides the PNP Dark-ON configuration. Related compact retro-reflective sensors can be reviewed across Omron Sensor Products.
| Brand | Omron |
| Product | Photoelectric Sensors |
| Model Number | E3T-SR44 2M |
Omron E3T-SR44 2M Photoelectric Sensor - Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective |
| Shape | Square type |
| Sensing Distance | 30 to 200 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Output Configuration | PNP |
| 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-SR44 2M Photoelectric Sensor uses retro-reflective sensing across a 30 to 200 mm range in an ultracompact square body. Its red LED establishes the optical path toward a reflector, while the built-in amplifier processes changes in the returned light. The PNP output transfers the switching state to compatible PLC inputs and machine-control circuitry, while Dark-ON operation defines the specified behavior. 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 direct electrical connection.
For an Omron PNP retro reflective photoelectric sensor requiring 30 to 200 mm sensing and Dark-ON logic, the corresponding model is the E3T-SR44. Polybutylene terephthalate is listed for the housing and denatured polyarylate for the optical section. IP67 protection is stated, with an approximate weight of 20 g. This specification also matches searches for an Omron compact PNP sensor and Omron 200 mm Dark ON sensor. Its 1 ms response supports quick presence sensing and position confirmation where mounting space is restricted and switching speed is especially important in automation. For a related NPN Dark-ON version in the same sensing range, see E3T-SR42 2M.
