SICK Background Suppression Photoelectric Sensor, Rectangular Sensor, 4 mm → 120 mm, PNP, IP66, IP67, IP68, IP69K

SICK Series W4 Photoelectric Sensor, Stainless Steel Housing, IP66/IP67/IP68/IP69K - WTB4S-3P2232V

This photoelectric sensor detects objects using background suppression for reliable presence sensing in automation and manufacturing environments. Housed in stainless steel, it is designed for harsh industrial conditions and interfaces via a 4-pin M8 connector. The device operates from low-voltage DC supplies and uses a pin‑point LED light source to discriminate target materials in production lines.

Features and Benefits:

• 30VDC maximum and 100mA current rating enables Compact control integration
  Response time 500μs supports high-speed detection tasks
  Operating range -30 to +70°C permits use across temperature extremes
  IP66 IP67 IP68 IP69K ingress protection allows rigorous wash‑down processes
  Threaded rectangular housing offers secure panel or bracket mounting
  PNP output provides standard sourcing signal for PLC inputs

Applications

• Suitable for detecting methyl methacrylate components on conveyors
  Ideal for plastic part presence checks in assembly machines
  Used with wash‑down-capable equipment in food‑grade lines
  Can be used for pick‑and‑place verification in robotic cells
  Suitable for proximity sensing where stainless housings are required

What connector type is provided for signal and power?

A 4-pin M8 connector supplies power and a PNP switched output for direct connection to control systems.

How does the sensor handle corrosive cleaning cycles?

The stainless steel enclosure combined with an IP69K rating resists high‑pressure, high‑temperature wash‑downs.

What kind of detection precision can I expect?

The pin‑point LED emitter enables focused detection suitable for small targets and dense material contrasts.

What certifications ensure suitability for industrial installations?

It carries recognised CE and UL approvals indicating compliance with common safety and regulatory standards.

Notes

Product details cover the whole product family. For details on the specifications for this individual product, please refer to the datasheet.