SME-8-S-LED-24

Product information

Product Overview

The SME-8M is Festo’s magnetic reed cylinder sensor for T-slot cylinders. It is inserted into the slot from above and sits flush with the cylinder profile, and it is available either individually configurable or pre-assembled with a cable. Festo describes the measuring principle as magnetic reed, which is the classic contact-based sensing method for end-position detection on a cylinder.

This page covers SME-8-S-LED-24 — Festo type code SME-8-S-LED-24, order number 150857. Everything below is taken from Festo’s own product data for this order number: the technical values, the category path, the GTIN and the lifecycle notice are all reproduced from the manufacturer’s page rather than paraphrased, so you can check them against Festo’s documentation before you buy.

Why Buyers Specify This Model

• Magnetic reed measuring principle — a proven, contact-based sensing method for cylinder end positions
• Inserted into the T-slot from above and flush with the cylinder profile, so it does not protrude
• Available individually configurable or as a pre-assembled sensor with cable
• LED switching status indication on the sensor body
• Cable length is part of the order code, so the sensor can be ordered to suit the machine wiring
• Measuring principle: magnetic reed
• Individually configurable or pre-assembled

Technical Specifications (Official Festo Data)

Parameter	Official value
Switching output	Contacting, bipolar

Source: Festo official product page for order number 150857 (GTIN 4052568010416). Values are reproduced unchanged; they are not converted or rounded.

Ordering Information

Item	Official data
Manufacturer	Festo
Type code	SME-8-S-LED-24
Festo order number	150857
GTIN	4052568010416
Festo category path	Products Sensors Cylinder sensors T-slot cylinder sensors SME-8 SME-8-S-LED-24
Series	Proximity switch SME-8M

The order number and the type code both have to match. A single character in the type code can change the valve function, the cushioning or the connection, and it always changes the order number.

Lifecycle and Availability

Festo’s own lifecycle notice for this variant: Please note: A newer product is available. More products of this category can be seen here: T-slot cylinder sensors Please contact Festo for alternatives Proximity sensor SME-8-S-LED-24 150857 GTIN: 4052

We publish this notice rather than omit it. If the notice applies to your variant, we will tell you what Festo still supplies and what the current alternative is, so you can decide between a like-for-like spare and a platform change.

Official Documentation

Every figure on this page comes from Festo. Use the manufacturer’s own documents to verify it:

• Festo official product page — SME-8-S-LED-24 — the source of the technical values and the lifecycle notice above.
• Festo official series catalogue (PDF) — Festo’s own catalogue for this series, including the type code breakdown and the ordering data for every variant.

Ordering This Part

Before we quote, please confirm:

• the complete Festo type code, exactly as it appears on the drawing or the nameplate — not just the series name;
• the order number if you have it, so we can cross-check the code against Festo’s catalogue;
• the quantity and the delivery address;
• for cylinders, the stroke and the mounting style, because both are fields in the order code;
• for valves and sensors, the electrical connection and the voltage, because these are fields in the order code.

Send us a photograph of the nameplate if the code is hard to read — that is usually the fastest way to avoid shipping the wrong variant.

Frequently Asked Questions

What does LED-24 mean on SME-8-S-LED-24?
The -LED- indicates a sensor with an LED switching-status indicator, and -24 is the nominal operating voltage. The letter before it describes the electrical connection — for example -S- for a plug connection — and that field changes the part number.

Is a reed sensor or a magneto-resistive sensor better?
They suit different jobs. Festo’s SME-8M uses the magnetic reed principle; the SMT-8M and SMT-10M families use magneto-resistive sensing. Reed sensors are the classic choice for simple end-position signalling; magneto-resistive sensors are typically used where a faster or more repeatable response is needed. Tell us the duty and we will match the sensor.

Is the SME-8-S-LED-24 still current?
Festo’s product page for this variant currently states that a newer product is available and points to alternatives in the same category. We reproduce that notice, and we can quote the current Festo sensor that replaces it if you prefer to standardise.

Which cylinders take the SME-8M?
T-slot cylinders — the ADN, DNC, DSBC and similar profile barrels all have the T-slot that this sensor drops into. Send us the cylinder code and we will confirm the fit and the cable length you need.