SICK WTB9M4-3P2211 Photoelectric Proximity Sensor

USD 186.57

High-performance photoelectric proximity sensor with background suppression. Offers 20-500mm range, PNP output, IR LED, and durable IP69K VISTAL housing.

SKU SICK-1051888 Category
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SICK WTB9M4-3P2211 Photoelectric Proximity Sensor

Model Identifier WTB9M4-3P2211
Official Part Number 1051888
GTIN Standard 4047084211690

Technical Overview

High-performance photoelectric proximity sensor with background suppression. Offers 20-500mm range, PNP output, IR LED, and durable IP69K VISTAL housing.

Key Features

  • Precise background suppression for reliable detection independent of object color
  • Highly robust VISTAL® plastic housing designed for extreme mechanical stress
  • Maximum sensing range of 20 mm to 500 mm with an 850 nm infrared LED
  • Industrial grade IP66, IP67, and IP69K enclosure ratings
  • Fast response time of < 0.5 ms and switching frequency up to 1,000 Hz
  • Broad operating temperature range spanning from -40 °C to +60 °C
  • Simple setup via integrated 5-turn potentiometer adjustment

Robust VISTAL® Housing with IP69K Rating and Precise Background Suppression

Technical Specification Matrix

ParameterValue
Supply Voltage10 V DC ... 30 V DC
Switching OutputPNP
Switching ModeLight/dark switching
Maximum Sensing Range20 mm ... 500 mm
Light SourceInfrared (IR) LED, 850 nm
Connection TypeMale connector M8, 4-pin
Output Current (Imax)≤ 100 mA
Response Time< 0.5 ms
Switching Frequency1,000 Hz
Housing MaterialPlastic, VISTAL®
Enclosure RatingIP66 / IP67 / IP69K
Operating Temperature-40 °C to +60 °C
Dimensions (W x H x D)12.2 mm x 49.8 mm x 23.6 mm
Physical Weight (kg)0.05
Dimensions L x W x H (cm)2.36 x 1.22 x 4.98

Industrial Applications

1. Packaging Machinery Washdown Environments

In food and beverage packaging, sensors are subjected to frequent high-pressure and high-temperature cleaning. The sensor's IP69K rating and chemically resistant VISTAL® housing prevent water ingress and material degradation, while its background suppression guarantees correct counting of passing packaged goods despite shiny or multi-colored wrappers.

Problem Solved

Eliminates sensor failure caused by aggressive washdown procedures while maintaining accurate detection of varying package types.

IP69KWashdownVISTALPackagingBackground Suppression

2. Automated Logistics and Conveyor Systems

Conveyor lines require fast, reliable detection to track moving parcels. With a 1,000 Hz switching frequency and sub-0.5 ms response time, the WTB9M4-3P2211 accurately registers high-speed packages. The 500 mm background suppression range ignores the conveyor belt surface behind the packages.

Problem Solved

Prevents false triggers from the conveyor belt background during high-speed sorting operations.

Conveyor Tracking1000 HzSub-millisecondPNPLogistics

3. Cold Storage Automated Storage and Retrieval

Automated pallet shuttles and ASRS in cold storage facilities operate in sub-zero environments. Rated for temperatures down to -40 °C, this sensor functions reliably without condensation or freezing issues, utilizing its infrared LED to consistently detect the presence of pallets or obstacles.

Problem Solved

Solves the problem of sensor malfunction and erratic switching when exposed to extreme industrial freezing temperatures.

Cold Storage-40 °CASRSInfrared LEDProximity Detection
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