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Omron E3T-ST21 2M Through-Beam Photoelectric Sensor NPN 2m Cable Ultra-Compact — front view

Omron E3T-ST21 2M Through-Beam Photoelectric Sensor NPN 2m Cable Ultra-Compact

SKU: E3T-ST21 2M

USD 44.00

Omron E3T-ST21 2M is an ultra-compact through-beam photoelectric sensor with NPN output, 2m cable for space-constrained detection applications.

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Product Overview

The E3T-ST21 2M is suited for machine sections where stable short-range object detection is needed in limited installation space. Through-beam sensing improves reliability for part presence checks and timing triggers. Its 2m cable version offers flexible wiring options in compact panels and custom harness layouts, making it practical for OEM builds and retrofit maintenance alike.

Key Features

  • Through-beam sensing for reliable object detection
  • Short-range class around 300mm for compact applications
  • NPN output for compatible control input architectures
  • 2m cable version for flexible installation routing
  • Compact design for tight mechanical spaces
  • Suitable for high-cycle industrial automation use
  • SKU: E3T-ST21 2M
  • Series: E3T
  • Voltage: 24V

Best-Fit Applications

  • Detecting part passage in compact conveyors
  • Confirming component presence before actuation
  • Triggering sequence steps in assembly fixtures
  • Monitoring small object flow in packaging modules
  • Replacing old short-range sensors during maintenance
  • Standardizing compact through-beam sensing in OEM designs

Buying Checklist

  • Through-beam design improves short-range detection consistency
  • 2m cable supports flexible machine wiring
  • Compact footprint fits constrained installation points
  • Reliable for repetitive detection in fast cycles
  • Practical and maintainable for long-term machine service

Technical Specifications

Model E3T-ST21 2M
Series E3T
Sensing Range 0-2.5m
Output Type NPN
Supply Voltage DC12-24V
Cable Length 2m
Protection IP67
Response Time 1ms
Light Source Red LED
Dimensions 10 x 20 x 31mm

FAQ for E3T-ST21 2M

Cable length?
2-meter pre-wired cable.
Output type?
NPN open collector.
Sensing range?
Up to 2.5m.
Size?
Ultra-compact 10mm width.

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