The Festo SMEO-4-K-LED-220 is a magnetic-field proximity switch designed for cylinder position sensing. It detects the piston magnet through the cylinder wall, switching a normally-open output when the magnetic field is present. The wide operating voltage range of 12…250 V AC/DC makes it a flexible spare for panels with mixed control voltages — no separate DC supply needed if the cabinet runs on 24 VDC or 120 VAC. Rated switching capacity is 10 W with a maximum continuous current of 500 mA. Response time is 2 ms, and the sensor can switch at up to 2000 Hz — fast enough for counting applications or high-speed cylinder cycling. The IP67 enclosure rating means the sensor body and cable entry withstand washdown and coolant splash, which is typical for Festo pneumatic actuators on assembly lines. The 2 m PVC cable terminates in flying leads, so wiring goes straight to a terminal block or connector without an intermediate junction. Mounting uses the SMBR kit onto the cylinder profile. Housing is polycarbonate, rated for -20 to 60 °C ambient.
Festo SMEO-4-K-LED-220 Proximity Switch, 12-250V AC/DC, IP67
MPNSMEO-4-K-LED-220
Festo SMEO-4-K-LED-220 proximity switch, magnetic field and electric current sensing, 12…250 V AC/DC, 10 W, IP67, 2 m PVC cable.
$25.00Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Type | PROXIMITY SWITCH |
| Parameter | Value |
|---|---|
| Switching output | Normally open |
| Parameter | Value |
|---|---|
| Housing material | PC |
Product details
Frequently asked questions
What is the closest functional alternative — the SMEO-4-S-LED-24?
The SMEO-4-S-LED-24 is a similar magnetic-field proximity switch but with a 12…27 V DC operating range and a plug connector instead of a 2 m cable. It will not drop into a panel wired for 120 VAC without a voltage change, and the mounting kit differs (SMBR vs. direct plug). For a like-for-like replacement at mixed AC/DC voltages, the SMEO-4-K-LED-220 is the correct choice.
What compliance documentation is available for this part?
The evidence does not list specific compliance certificates (RoHS, REACH, UL, IEC). Standard Festo documentation for this series typically includes a declaration of conformity; verify with your distributor at time of order.
MPN
SMEO-4-K-LED-220