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Rectangular plastic sensor housing 11 by 31 by 20 mm with M8 connector

Sick

SICK WTB140-P330 Photoelectric Proximity Sensor PNP

SKU CH-XKGQ-Q59SP

Detects objects from 15 mm to 500 mm using visible red LED light with background suppression in a compact 11 mm × 31 mm × 20 mm IP67-rated housing

  • Photoelectric proximity sensor with background suppression up to 500 mm
  • Compact 11 mm x 31 mm x 20 mm rectangular housing fits tight spaces
  • PNP output with selectable light/dark switching via rotary switch
  • IP67 enclosure rating resists dust and water ingress
  • Operates on 10 V DC to 30 V DC supply voltage

SICK WTB140-P330 proximity sensor

The SICK WTB140-P330 is a rectangular photoelectric proximity sensor with background suppression and a PNP switching output. It operates on a 10 V DC to 30 V DC supply and detects objects from 15 mm to 500 mm using visible red light at 680 nm. The IP67-rated plastic housing suits industrial automation tasks requiring reliable presence detection.

M8 connector and light/dark selector

A 3-pin M8 connector provides the electrical interface while a rotary switch selects light or dark switching mode. Background suppression reduces false triggers from reflective backgrounds. The sensor consumes 30 mA and responds in 0.5 ms, making it suitable for fast production-line cycles.

Simple mounting with alignment care

The compact 11 mm by 31 mm by 20 mm plastic body fits tight machine frames and mounts with standard brackets. Correct alignment of the visible red spot is essential because background suppression only works within the specified 15 mm to 500 mm window. Operating temperature ranges from 25 °C to +55 °C.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $103.99
Typical for this category: the median of 5,006 items is $95.99.

Specifications

Product
Brand nameSICK
Model nameSICK WTB140-P330

Questions about this item

Does the plastic PBT housing or PC optics need periodic replacement?

The PBT housing and PC optics are sealed to IP67; no scheduled replacement is required under normal use.

What limits continuous operation first — the 0.5 ms response time or the 30 mA current draw?

The 30 mA draw at 10–30 V DC is the steady-state limit; the 0.5 ms response time does not create thermal load.

How much heat does the sensor produce when powered at 30 V DC all day?

At 30 mA maximum the sensor dissipates under 1 W, so heat rise inside the IP67 housing stays minimal during continuous operation.

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