Sensors

Classic

Festo Classic covers the SMEO-4U series: legacy proximity switch types with 4 mm web mounting for use in existing installations that rely on this mounting form. The range includes eight types, including SMEO-4U-K-LED-24, SMEO-4U-K5-LED-24 and SMEO-4U-S-LED-24-B as well as SMTO-4U variants with M-connector. All types operate at 24 V DC and include an LED status indicator.

The CRSMEO-4-K-LED-24 variant is designed as a dual sensor for short cylinder strokes, with two switching points in a single unit. These Classic types are replacement parts for older Festo generations, ensuring backward compatibility without mechanical changes to the cylinder bracket.

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  • 1 manufacturer
  • Net prices plus VAT
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  1. Proximity Sensor SMEO-4U-S-LED-24-B - Festo 151526
    €78.91

Buying guide

How to choose Classic

What matters when choosing: properties, comparison and typical applications.

Technical features

⚙ 4 mm web mounting - SMEO-4U series, existing brackets remain unchanged
✓ 24 V DC, LED indicator - uniform supply voltage across the entire Classic line
⬡ SMTO-4U with M-connector - tool-free field wiring instead of cable exit
⚡ CRSMEO-4-K-LED-24 - dual sensor, two switching points in one housing
✦ Backward compatible - direct replacement for older SMEO generations without modification

Type overview

TypeConnectionSpecial feature
SMEO-4U-K-LED-24Cable, straightStandard Classic type
SMEO-4U-K5-LED-24Cable, 5 mm exitFor confined installation
SMEO-4U-S-LED-24-BRod mountingRound-cylinder mounting
SMTO-4U-NS/PS-K/S-LED-24Cable or rodNPN (NS) or PNP (PS) output
CRSMEO-4-K-LED-24CableDual sensor, 2 switching points

Typical applications

Typical applications: Spare parts supply for older Festo pneumatic installations with 4 mm web mounting, maintenance and repair of transfer systems and assembly machines from previous generations, direct sensor replacement without modifying cylinder brackets, and stock holding for plant with long maintenance intervals.