Product Description
Festo SIES-8M-PO-24V-K-7.5-OE 551391
The Festo SIES-8M-PO-24V-K-7.5-OE (part number 551391) is a robust and reliable inductive proximity sensor designed for non-contact position detection in pneumatic cylinders with a T-slot. This sensor provides a PNP normally open (N/O) switching output, making it compatible with a wide range of industrial control systems. It features a clear LED switching status indicator for quick visual feedback. Built for harsh environments, it boasts an IP68 protection rating and a wide operating temperature range. The 7.5-meter integrated cable offers ample length for flexible and convenient installation in various automation setups.
Technical Specifications:
- Design: For T-slot
- Switching Output: PNP, normally open contact (N/O)
- Operating Voltage Range DC: 10 V … 30 V
- Electrical Connection: Cable, 3-core, 7.5 m length
- Nominal Switching Distance: 2.5 mm
- Degree of Protection: IP65, IP68
- Ambient Temperature: -40 °C … 85 °C

Festo SIES-8M-PO-24V-K-7.5-OE 551391
Festo SIES-8M-PO-24V-K-7.5-OE (551391) inductive proximity sensor for T-slot cylinders. Features a PNP N/O output, 24V DC operation, a 7.5m cable, and IP68 protection for reliable position sensing in industrial automation.






