The Festo SME-8M-DS-24V-E-5-OE is a magnetic reed proximity sensor designed for position sensing on pneumatic cylinders. It operates on a 10 … 30 V DC supply and switches loads in the 80 … 500 mA range, with a normally open or normally closed output configurable by wiring. The magnetic reed measuring principle means it detects the piston magnet through the cylinder wall — no physical contact, no wear on the sensing element.
Deployment Context
Rated for -40 … 70°C operating temperature, so it handles washdown environments and unheated plant floors. The cable connection (5-meter) routes through standard cable glands into the control cabinet or junction box. Magnetic reed sensors like this one are the common choice for end-of-stroke detection on Festo and other ISO cylinders — no target required, just the piston magnet.