E3T-SL21 5M

Name: E3T-SL21 5M
Brand: OMRON
SKU: E3T-SL21 5M

The Omron E3T-SL21 5M is an ultra compact and slim photoelectric sensor with a built-in amplifier, offering limited reflective sensing and a sensing distance of 5 to 30 mm. It features IP67 protection and is perfect for precise object detection.

Product ModelE3T-SL21 5M

Product ID110313

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Ultra Compact DesignThe Omron E3T-SL21 5M boasts an ultra compact and slim design, making it ideal for space-constrained applications. Its compact size allows for easier installation and integration into various systems.
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2. Limited Reflective SensingThis sensor utilizes limited reflective sensing, which is particularly useful for detecting objects in specific ranges. It ensures accurate detection without false triggers from distant or irrelevant reflections.
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3. Wide Sensing DistanceWith a sensing distance of 5 to 30 mm, the E3T-SL21 5M offers versatility in detecting objects at various distances. This range is suitable for a wide range of applications, from small parts to medium-sized objects.
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4. Built-in AmplifierThe sensor comes with a built-in amplifier, which enhances its performance and reliability. This feature simplifies the installation process and reduces the need for additional components, saving space and cost.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Body Type

Rectangular - Compact

Housing Material

Plastic

Supply Voltage

12 to 24 VDC

Type

Minature

Sensing Method

Convergent-reflective

Output

NPN

5. IP67 ProtectionThe E3T-SL21 5M is designed with IP67 protection, ensuring it can withstand harsh environments. This rating means the sensor is dust-tight and can operate in water immersion up to 1 meter for 30 minutes, making it suitable for industrial applications.

6. Red LED Light SourceThe sensor uses a red LED light source, which provides clear visibility and reduces interference from other light sources. This feature enhances the sensor's accuracy and reliability in various lighting conditions.

7. NPN Open Collector OutputThe E3T-SL21 5M features an NPN open collector output, which is compatible with a wide range of control systems. This output configuration allows for easy integration into various automation systems, ensuring seamless communication and control.

8. Fast Response TimeThe sensor has a fast response time of 1 ms max., ensuring quick and accurate detection of objects. This rapid response is crucial in applications where speed and reliability are paramount.

9. Pre-wired Cable LengthThe E3T-SL21 5M comes with a pre-wired cable length of 5 meters, which simplifies the installation process. The pre-wired design reduces the need for additional cabling, saving time and effort during setup.

10. Power Supply FlexibilityThe sensor operates on a power supply voltage of 12 to 24 VDC, providing flexibility in power supply configurations. This range ensures compatibility with various power sources, making it easier to integrate into different systems.

11. Low Current ConsumptionThe E3T-SL21 5M has a maximum current consumption of 20 mA, which is relatively low compared to other sensors. This low power consumption reduces energy costs and minimizes heat generation, extending the sensor's lifespan.

12. Durable MaterialsThe sensor is constructed with durable materials such as polybutylene terephthalate (PBT) for the case and denatured polyarylate for the lens. These materials ensure the sensor's longevity and resistance to environmental factors.

13. Easy MaintenanceThe E3T-SL21 5M features a new design that enhances maintenance efficiency. The wire-saving connector simplifies power line wiring, reducing space usage and costs. This design also facilitates easier inventory control by eliminating the need to differentiate between master and slave connectors.

14. Wide Operating Temperature RangeThe sensor operates within a wide ambient temperature range of -25 to 55 °C, ensuring reliable performance in various environmental conditions. This range makes it suitable for use in both indoor and outdoor applications.

15. High Insulation ResistanceThe E3T-SL21 5M has an insulation resistance of 20 MΩ min. at 500 VDC, ensuring safe operation and preventing electrical shocks. This high insulation resistance is crucial in industrial environments where safety is paramount.

16. Vibration and Shock ResistanceThe sensor is designed to withstand vibrations and shocks, with a destruction level of 10 to 2,000 Hz and 1,000 m/s² in X, Y, and Z directions. This robust design ensures the sensor remains functional even in harsh conditions.

17. Ambient Humidity RangeThe E3T-SL21 5M operates within an ambient humidity range of 35% to 85%, ensuring reliable performance in various humidity conditions. This range makes it suitable for use in environments with moderate to high humidity levels.

18. Dielectric StrengthThe sensor has a dielectric strength of 1,000 VAC, 50/60 Hz for 1 min, ensuring safe operation and preventing electrical discharges. This high dielectric strength is crucial in industrial applications where electrical safety is essential.

19. Degree of ProtectionThe E3T-SL21 5M is rated IP67, meaning it is dust-tight and can operate in water immersion up to 1 meter for 30 minutes. This rating ensures the sensor can withstand harsh environments, making it ideal for industrial applications.

20. Weight and MaterialThe sensor weighs approximately 20 grams and is constructed with durable materials such as PBT for the case and denatured polyarylate for the lens. These materials ensure the sensor's longevity and resistance to environmental factors.

Max Sensing Direction

Connection

Pre-wired

Cable Length

5 m

Light Source

Red LED

Operation

Light-ON (L-ON)

Manufacturer ID