Procurement managers rarely finalize EE-SPW321 without reviewing Omron SMPS 24V 10A, Omron Ee Sx671 and Omron Photoelectric Sensors E3T Series, ensuring that the chosen component meets budget, compliance, and delivery conditions.
Omron EE-SPW321 Photomicrosensor
The Omron EE-SPW321 Photomicrosensor offers Throughbeam type, 300 mm Sensing distance, NPN Output, Pre-wired models, 12 to 24 VDC Power supply voltage, Dark-ON mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron EE Series.

| Brand | Omron |
| Product | Photomicro Sensors |
| Model Number | EE-SPW321 |
Omron EE-SPW321 Photomicrosensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Throughbeam type |
| Sensing Distance | 300 mm |
| Power Supply Voltage | 12 to 24 VDC |
| Control Output (Output Type) | NPN |
| Connection Method | Pre-wired models |
| Cable Length | 2 m (Cable length from emitter to amplifier: 0.5 m) |
| Current Consumption | Average value: 30 mA |
| Operation Mode | Dark-ON |
| Response Time | Operate or reset: 1 ms max. |
| Control Output (Residual Voltage) | at 100 mA load current: 1 V max. |
| Control Output (Load Current) | 100 mA max. |
| Indicator | Light indicator (red LEDs on Sensor and Amplifier) |
| Ambient Temperature (Operating) | -20 to 55 β |
| Ambient Humidity (Operating) | 5 to 85 % |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude each in X, Y, and Z directions for 2 h |
| Shock Resistance | Destruction: 500 m/s2 |
| Degree Of Protection | IP64 |
| Material | Case: ABS resin Lens: Acrylic resin |
The Omron EE-SPW321 is a compact through-beam photomicrosensor with a built-in amplifier, offering precise object detection up to 300 mm. It comes pre-wired with a 2 m cable and a 0.5 m emitter-to-amplifier connection, making it easy to install in space-constrained setups.
This model operates in Dark-ON mode and features an NPN open collector output, supporting up to 100 mA load current. The integrated red LED indicators on both the sensor and amplifier enable quick status checks. With a fast 1 ms response time and low 30 mA current consumption, it delivers consistent performance in industrial automation tasks.
Built from durable ABS resin and rated IP64, the EE-SPW321 withstands harsh environments, including temperature ranges from -20Β°C to 55Β°C. Itβs a reliable choice for applications in packaging, part detection, and machine positioning systems.




