In sourcing discussions, E3S-DBP21 is often placed next to Omron SMPS 24V 10A, E3Z D61 2M and Omron Sensors so procurement teams can align budgets and technical requirements effectively.
Omron E3S-DBP21 Photoelectric Sensor
The Omron E3S-DBP21 Photoelectric Sensor is a transparent object detection retro-reflective with M.S.R. function, offering a 3.5 m sensing distance (E39-R8) and PNP output. It operates on a 10β30 VDC power supply and is part of the Omron automation range under the Omron Photoelectric Sensors category and the Omron E3S Series. Featuring a red LED (624 nm) light source, Smart Teaching sensitivity adjustment, M12 connector, 0.5 ms response time, 30 mA current consumption, and IP67 protection, it ensures precise and reliable operation in demanding industrial applications.

| Brand | Omron |
| Product Type | Photoelectric Sensor |
| Model Number | E3S-DBP21 |
Omron E3S-DBP21 Photoelectric Sensor β Technical Specifications
| Specification | Value |
|---|---|
| Sensing Method | Retroreflective (with MSR function) |
| Sensing Distance | 0 to 3.5 m |
| Light Source | Red LED (624 nm) |
| Power Supply Voltage | 10 to 30 VDC |
| Output configuration | PNP |
| Connection Method | Connector M12 |
| Power Consumption | 720 mW max. (current consumption: 30 mA max. at power supply voltage of 24 VDC) |
| Control Output | Load power supply voltage: 30 VDC max., Load current: 100 mA max. (Residual voltage: 2 V max.) |
| Response Time | Operate or reset: 0.5 ms max. |
| Indicators | Light indicator (orange) and stability indicator (green) |
| Ambient Illumination | (Receiver side) Incandescent lamp: 3,000 lx max., Sunlight: 10,000 lx max. |
| Ambient Temperature Range | Operating: β25 to 60Β°C, 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 at 50/60 Hz for 1 minute |
| Vibration Resistance | Destruction: 10 to 55 Hz with double amplitude of 1.5 mm 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, reversed output polarity protection, and mutual interference prevention |
| Degree of Protection | IEC IP67, DIN 40050-9 IP69K |
| Material | Polybutylene terephthalate (PBT)/ABS, Methacrylic resin (PMMA), Polyester elastomer, Polyvinyl chloride (PVC) |
| Weight | Approx. 60 g/approx. 40 g |
The Omron E3S-DBP21 Photoelectric Sensor uses a retroreflective sensing method with an advanced MSR function to detect transparent objects up to a sensing distance of 3.5 meters. Powered by 10 to 30 VDC with a maximum consumption of 720 mW, it features a highly stable Red LED (624 nm) light source and PNP output configuration via a standard M12 connector. With a lightning-fast 0.5 ms response time, the sensor ensures seamless operation in high-speed bottling and packaging lines.
Its rugged build includes reversed polarity protection, short-circuit protection, and resistance to environmental disturbances such as vibration and shock. The E3S-DBP21 is protected under IP67 and IP69K ratings, making it ideal for washdown applications in food and beverage industries. With dual LED indicators for light detection and stability, setup becomes intuitive and error-free. Crafted from high-grade materials like PBT, PMMA, and stainless steel (SUS304), it combines lightweight design (approx. 60g) with durability.
This sensor is widely trusted by automation engineers for critical detection tasks requiring speed, reliability, and environmental resilience.




