Sensors
Proximity switch
Festo proximity switches of the SME, SMTO and SMEO series detect end positions of pneumatic cylinders and linear actuators without contact, using the permanent magnet integrated in the piston. Common designs include T-slot mounting for cylinders with C-slot (SME-8, SME-10) and rod mounting for round and profile cylinders. Operating voltage 10-30 V DC, LED status indicator and PNP/NPN switching output are standard across the entire series.
SMTO variants additionally provide an M12 device connector for tool-free field wiring. Special types SMT-10M-PS-24V with M8D design and SMTSO variants with double locking nut increase tamper resistance in Ex-protected or harsh environments. Mounting brackets SMBN-10 supplement the installation options.
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Buying guide
How to choose Proximity switch
What matters when choosing: properties, comparison and typical applications.
Technical features
Variants by mounting type
| Series | Mounting | Connection |
|---|---|---|
| SME-8 / SME-8-K | T-slot, C-profile | Cable exit L-shape |
| SME-10 | T-slot 10 mm | Cable exit straight or L-shape |
| SMTO-8E-NS/PS | Rod mounting, clamping nut | M12 connector NPN or PNP |
| SMTSO-8E | Rod mounting, double nut | M12 connector NPN or PNP |
| SMEO-1 | Cable mounting, round cylinder | Cable exit with LED indicator |
Typical applications
Typical applications: End-position detection on round cylinders, ISO cylinders and slide linear actuators in handling and assembly systems, position feedback for PLC controls in conveyor and transfer systems, use in safety circuits for stroke end-position verification, and replacement of mechanical limit switches in existing installations.