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SICK WTF12-3P2431 — Proximity Sensors

SICK WTF12-3P2431 Photoelectric Proximity Sensor, 175 mm, PN

MPNWTF12-3P2431

SICK W12-3 photoelectric proximity sensor, WTF12-3P2431, PNP output, 175 mm sensing range, 330 µs response, M12 connector, IP66/IP67/IP69K.

$228.60 – $353.49Ref. price · indicative, final on quote
SICK WTF12-3P2431 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

WTF12-3P2431 — Identification
ParameterValue
SeriesW12-3
WTF12-3P2431 — Sensing
ParameterValue
Sensing distance, max.175 mm
WTF12-3P2431 — Electrical
ParameterValue
Operating voltage, max.30 V
Operating voltage, min.10 V
Termination typeConnector, M12, 4-Pin
WTF12-3P2431 — Output
ParameterValue
Load current100 mA
WTF12-3P2431 — Mechanical
ParameterValue
Length42 mm
WTF12-3P2431 — Environmental
ParameterValue
Operating temperature, max.60 °C
Operating temperature, min.-40 °C
IP protection ratingIP66;IP67;IP69K

Product details

The SICK WTF12-3P2431 is a photoelectric proximity sensor from the W12-3 series, delivering a 175 mm sensing range with a visible red LED light source. Its PNP output switches at 330 µs, making it suitable for high-speed object detection on packaging or material-handling lines. The 15.6 mm wide housing fits standard 18 mm pitch mounting holes, so it drops into existing W12-3 footprints without panel rework.

The IP66 / IP67 / IP69K protection rating means the sensor body and optics withstand high-pressure washdown at 80 bar and 80 °C, so it is qualified for food-and-beverage and pharmaceutical clean-in-place (CIP) zones. The 175 mm sensing distance is a background-suppression type — it detects objects reliably within that window while ignoring backgrounds beyond it, which avoids false triggers on conveyor belts or machine frames. The 100 mA load current drives most PLC inputs and small relays directly, without an interposing amplifier.

Integration notes

The M12 4-pin connector (male on the sensor) mates to standard M12 cordsets. Wiring is PNP normally-open / normally-closed selectable via light-on / dark-on switching. Operating voltage range of 10–30 VDC covers 24 VDC nominal supplies common in automation panels. The -40 °C to +60 °C temperature range allows deployment in cold storage or near washdown areas without derating.

Frequently asked questions

What is the closest functional second-source — WSE12-3P2431?

The WSE12-3P2431 is a through-beam sensor (separate emitter and receiver) with a 20 m range, while the WTF12-3P2431 is a proximity sensor with a 175 mm range. They share the same W12-3 housing, M12 connector, and PNP output, so the WSE12-3P2431 can be a mechanical drop-in for the same mounting footprint, but the sensing principle and range differ — use it only if the application can accept a through-beam configuration.

Will WTF12-3P2431 drop into a panel specified around WSE12-3P2431 without rewiring?

Yes, both sensors share the same 15.6 mm width, M12 4-pin connector, and PNP output, so the WTF12-3P2431 mounts in the same bracket and connects to the same cordset without rewiring. The only change is the sensing principle — proximity vs. through-beam — so verify the detection task matches the 175 mm range.

What compliance documentation is available for WTF12-3P2431?

The evidence does not list specific compliance certificates (RoHS, REACH, UL, IEC). Standard SICK documentation for the W12-3 series typically includes a declaration of conformity and product datasheet; request these from the distributor or manufacturer for your qualification file.

MPN
WTF12-3P2431