SR21-IR Datalogic Photoelectric Sensor

Datalogic SR21-IR Photoelectric Sensor – High Precision Infrared Slot Sensor

The Datalogic SR21-IR is a high-resolution photoelectric slot sensor designed for precision detection in industrial automation applications. Featuring an infrared LED emitter, auto-setting functionality, and dual output (NPN and PNP), this sensor ensures 100% accuracy and easy integration into a wide range of machine vision and object detection systems.

Key Features:

• Brand: Datalogic

• Model Number: SR21-IR

• Product Type: Photoelectric Sensor

• Material: PBT

• Color: Blue

• Weight: 47g

• Accuracy: 100%

• Active Area: 10 mm

• Operating Temperature: -25°C to 70°C

• Power Supply: 10–30 V DC (reverse polarity protected)

• Consumption: 55 mA max.

• Light Emission:

  • Infrared LED 880 nm (IR version)

  • Red 635 nm / Green 535 nm (RG version)

• Resolution: 0.5 mm

• Slot Width: 2 mm

• Slot Depth: 50 mm

• Detection Point Depth: 7.5 mm

• Setting Method: AUTO SET push-button

• Indicators:

  • Yellow OUTPUT LED

  • Green/Red Bi-colour READY/ERROR LED

• Output Type: NPN and PNP with pull-down/up 10 kΩ

• Saturation Voltage: 2 V max.

• Output Current: 100 mA max. (with short-circuit protection)

Applications:

• Label detection on packaging lines

• High-speed edge or presence detection

• Small part counting and positioning

• Print mark sensing

Why Choose the Datalogic SR21-IR?

• Compact slot design for tight-space installations

• High-resolution detection for accurate object sensing

• Dual NPN/PNP output for flexible connectivity

• Auto-setup and diagnostic LEDs ensure quick commissioning and easy status monitoring

• Durable PBT housing for robust industrial use

Optimize your automation workflow with the Datalogic SR21-IR Photoelectric Sensor – delivering precision, performance, and reliability in every application.