Technical Overview
The Omron E3T-FT22 2M is an ultrathin through-beam photoelectric sensor with a built-in amplifier, M2 mounting and a 2 m pre-wired cable. Its 650 nm red LED supports a 300 mm sensing distance and detection of opaque objects at least 1.3 mm in diameter. This version has NPN open-collector Dark-ON output, 1 ms maximum operate/reset response, 12 to 24 VDC supply and IEC IP67 protection. Omron lists this exact model as selling and standard-stock; its stock indicator does not establish current local inventory.
A compact 300 mm through-beam photoelectric sensor with NPN Dark-ON output for industrial object detection.
Key Features
- Through-beam sensing at 300 mm
- Detects opaque objects at least 1.3 mm in diameter
- NPN open-collector output, Dark-ON
- 650 nm red LED; 1 ms maximum operate/reset response
- 12 to 24 VDC ±10% supply; IEC IP67 protection
- M2 mounting and 2 m pre-wired cable
- Packaged weight approximately 40 g
300 mm through-beam detection with NPN Light-ON switching and a compact 2 m wired sensor.
Technical Specification Matrix
| Parameter | Value |
| Product type | Ultrathin through-beam photoelectric sensor with built-in amplifier |
| Sensing method | Through-Beam |
| Sensing distance | 300 mm |
| Standard sensing object | Opaque object, 1.3 mm diameter min. |
| Minimum sensing object | 1.3 mm min. diameter (opaque object) |
| Directional angle | Emitter: 3 to 25°; receiver: 3° min. |
| Current consumption | Emitter: 10 mA max.; receiver: 20 mA max. |
| Light source | Red LED, 650 nm |
| Supply voltage | 12 to 24 VDC ±10%; ripple 10% p-p max. |
| Control output | NPN open collector, 26.4 VDC max., 50 mA max. |
| Residual voltage | 1 V max. at load current below 10 mA; 2 V max. at 10 to 50 mA |
| Operation mode | Dark-ON |
| Protective circuits | Output short-circuit, output reverse-polarity and power-supply reverse-polarity protection |
| Response time | 1 ms max. (operate and reset) |
| Ambient illuminance | Incandescent lamp: 5,000 lx max.; sunlight: 10,000 lx max. |
| Protection rating | IEC 60529 IP67 |
| Operating temperature | -25 to +55°C, no icing or condensation |
| Operating humidity | 35 to 85%, no condensation |
| Connection | Pre-wired, 2 m cable |
| Indicators | Operation indicator (orange); stability indicator (green) |
| Mounting and accessories | M2 mounting; instruction manual, M2 × 8 set screws and nuts supplied |
| Housing material | Polybutylene terephthalate (PBT) |
| Lens and display material | Modified polyarylate |
| Physical Weight (kg) | 0.040 (approx., packaged). |
| Dimensions L x W x H (cm) | See the Omron E3T-FD/FT dimension drawing; no consolidated L × W × H value is stated in the ratings text. |
| Supply status | Active; Omron lists this exact model as selling and standard-stock. Current stock status is not established by the listing indicator. |
Suggested applications
Engineering suggestions require suitability checks for your installation.
1. Through-beam object interruption detection
The through-beam sensing design supports contact-free detection in compact machinery.
Potential use
Align the emitter and receiver across a 300 mm gap and confirm the required Dark-ON logic with the actual object and controller.
300 mm Through-Beam
NPN
2 m cable
2. Machine automation sensing
The built-in amplifier and 1 ms response support discrete presence sensing in automated equipment.
Potential use
Use a compatible 12 to 24 VDC input and follow Omron mounting and optical-axis alignment guidance.
Photoelectric sensor
1 ms response
IP67