Before procurement teams confirm E3Z-R81-2M, they typically review Omron Photoelectric Sensor, E3Z D61 2M and Omron Sensors to double-check performance ratings, stock availability, and supplier credibility carefully.
Omron E3Z-R81 2M Photoelectric Sensor
The Omron E3Z-R81 2M Photoelectric Sensor offers Retro-reflective with M.S.R. function, 100 mm to 3 m Sensing distance, PNP Output, Pre Wired, Cable Length 2M, Red LED (660 nm), 12 to 24 VDC Power supply voltage, Light-ON/Dark-ON mode. Manufactured by Omron under the Omron Photoelectric Sensors category, this model belongs to the Omron E3Z Series.
| Brand | Omron |
| Product Type | Photoelectric Sensor |
| Model Number | E3Z-R81 2M |
Omron E3Z-R81 2M Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retro-reflective with M.S.R. function |
| Sensing Distance | 100 mm to 3 m |
| Light Source | Red LED (660 nm) |
| Power Supply Voltage | 12 to 24 VDC |
| Output configuration | PNP |
| Connection Method | Pre Wired, Cable Length 2M |
| Current Consumption | 30 mA max. |
| Operation Mode | Light-ON/Dark-ON |
| Response Time | Operate or reset: 1 ms max |
| Sensitivity Adjustment | One-turn adjuster |
| Ambient Illumination | Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max |
| Ambient Temperature Range | Operating: β25 to 55Β°C, Some connector models: β40Β°C to 55Β°C * (with no icing or condensation) Storage: β40 to 70Β°C (with no icing or condensation) |
| Ambient Humidity Range | Operating: 35% to 85%, Storage: 35% to 95% (with no condensation) |
| Insulation Resistance | 20 MΞ© min. at 500 VDC |
| Dielectric Strength | 1,000 VAC, 50/60 Hz for 1 min |
| Vibration Resistance | Destruction: 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions |
| Shock Resistance | Destruction: 500 m/s2 3 times each in X, Y, and Z directions |
| Protection Circuits | Reversed power supply polarity protection, Output short-circuit protection, Mutual interference prevention, and Reversed output polarity protection |
| Degree of Protection | IEC, IP67 |
| Material | PBT (polybutylene terephthalate) |
| Weight | Approx. 65 g |
Omron is a global leader in automation technology, known for sensors that combine precision, durability, and easy integration. The Omron E3Z-R81 2M continues this tradition, offering engineers a compact and reliable solution for object detection in demanding industrial applications. Designed for flexibility and performance, this model is part of the trusted E3Z series, which is widely used across packaging, material handling, and sorting industries. With proven build quality and smart sensing features, the E3Z-R81 Omron is a dependable choice for automation professionals.
The Omron E3Z-R81 2M operates using a retro-reflective sensing method with MSR (Mutual Interference Prevention), ensuring reliable detection even when multiple sensors are used in close proximity. Equipped with a red LED light source (660 nm), it provides stable detection up to 4 m when used with the E39-R1S reflector. This sensor runs on 12β24 VDC and features a PNP output with selectable Light-ON/Dark-ON modes, giving engineers the flexibility to adapt to different control system requirements. The fast 1 ms response time ensures accurate detection in high-speed environments such as conveyors and packaging lines. Its rugged PBT housing with IP67 protection provides resistance against dust, water, and vibration, guaranteeing long-term reliability.
Other highlights of the E3Z R81 2M include a pre-wired 2-meter cable for easy installation, one-turn sensitivity adjuster for quick configuration, and protective circuitry against reverse polarity and short circuits. The compact design allows the sensor to fit into space-constrained machinery, while background suppression helps maintain stable performance even in environments with reflective surfaces or fluctuating light. With these features, the Omron E3Z-R81 offers excellent balance between performance, durability, and simplicity.
Common applications for the Omron E3Z R81 include packaging machines, conveyor systems, automated inspection stations, and logistics operations where fast and stable retro-reflective sensing is required. The sensor is designed to minimize false detection and deliver consistent performance even in dusty or vibration-heavy environments. Easy to integrate, rugged in design, and backed by Omronβs engineering expertise, the E3Z-R81 2M remains a top choice for system integrators and OEMs.
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