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Products/Festo/543861
Festo 543861 Proximity sensor SME-8M-DS-24V-K-0,3-M8D
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Festo

543861

Proximity sensor SME-8M-DS-24V-K-0,3-M8D

The Festo 543861 is an oil-resistant industrial component utilizing a magnetic reed measuring principle with a contact-based, bipolar N.O. contact switching output. It operates within an ambient temperature range of -40 °C to 70 °C and features an operating voltage range of 5 V to 30 V AC, supporting a maximum output current of 500 mA and a max AC switching capacity of 10 VA. This RoHS compliant device carries the RCM compliance mark, c UL us - Listed (OL) certification, and bears CE and UKCA markings as per EU and UK directives for EMC and RoHS. Submit the exact part number, quantity, and application requirements for a formal quote.

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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.

Manufacturer
Festo
Part number
543861
Data verification
Manufacturer evidence reviewed

For a faster response, include quantity, condition, and delivery destination.

Exact part-number verificationTechnical properties are matched to 543861.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.

Verified configuration

Technical Specifications

Certication
RCM compliance mark | c UL us - Listed (OL)
CE marking (see declaration of conformity)
As per EU EMC directive | As per EU RoHS directive
UKCA marking (see declaration of conformity)
To UK instructions for EMC | To UK RoHS instructions
Special features
Oil-resistant
Note on materials
RoHS compliant
Application note
https://www.festo.com/Drive-Sensor-Overview
Measuring principle
Magnetic reed
Ambient temperature
-40 °C...70 °C
Switching output
Contact-based, bipolar
Switching element function
N.O. contact
Max. output current
500 mA
Max. output current in mounting kits
80 mA
Min. switching capacity AC
10 VA
Max. switching capacity DC
10 W
Max. switching capacity DC in mounting kits
2.4 W
Max. switching capacity AC in mounting kits
2.4 VA
Voltage drop
1.17 V
Short-circuit protection
No
Overload protection
Not available
Operating voltage range AC
5 V...30 V
DC operating voltage range
5 V...30 V
Reverse polarity protection
No
Electrical connection 1, connection type
Cable with plug
Electrical connection 1, connection technology
M8x1 A-coded as per EN 61076-2-104
Electrical connection 1, number of pins/wires
3
Electrical connection 1, type of mounting
Screw-type lock | Rotatable | Compatible with rotatable/non-rotatable screw-type lock
Connection outlet orientation
Longitudinal
Material of pin contacts
Gold-plated copper alloy

Engineering context

Identification and RFQ Guidance

Confirm the exact configuration

Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

What to include in your RFQ

Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.

Technical verification

Our sourcing response is prepared against Festo 543861. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.