SICK WTB9M4-3P2261 Photoelectric Sensor

USD 174.38

Background suppression proximity sensor with 20-350mm range, PNP output, M8 4-pin connection, and 1500Hz switching. Housed in IP69K-rated VISTAL plastic.

SKU SICK-1051889 Category
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SICK WTB9M4-3P2261 Photoelectric Sensor

Model Identifier WTB9M4-3P2261
Official Part Number 1051889
GTIN Standard 4047084191794

Technical Overview

Background suppression proximity sensor with 20-350mm range, PNP output, M8 4-pin connection, and 1500Hz switching. Housed in IP69K-rated VISTAL plastic.

Key Features

  • High-precision background suppression prevents false triggers from highly reflective backgrounds.
  • Visible red PinPoint LED (650 nm) allows for effortless and precise optical alignment.
  • Extremely rugged VISTAL plastic housing provides superior mechanical durability.
  • IP66, IP67, and IP69K enclosure ratings ensure reliable operation in high-pressure washdown applications.
  • Fast 0.333 ms response time and 1,500 Hz switching frequency for high-throughput dynamic automation tasks.
  • Broad ambient operating temperature range from -40 °C to +60 °C.

Precise background suppression with visible PinPoint LED alignment in an ultra-rugged, IP69K-rated VISTAL housing.

Technical Specification Matrix

ParameterValue
Sensing Range20 mm ... 350 mm
Output TypePNP, Light/Dark Switching
Supply Voltage10 V DC ... 30 V DC
Switching Frequency1,500 Hz
Response Time< 0.333 ms
Light SourceVisible Red PinPoint LED (650 nm)
Connection TypeMale Connector M8, 4-pin
Enclosure RatingIP66 / IP67 / IP69K
Operating Temperature-40 °C ... +60 °C
Housing MaterialPlastic, VISTAL
Physical Weight (kg)0.01
Dimensions L x W x H (cm)2.36 x 1.22 x 4.98

Industrial Applications

1. High-Speed Packaging Line Detection

Accurately detects passing cartons or containers at rapid conveyor speeds without false triggers from highly reflective metallic machinery.

Problem Solved

Eliminates false positive readings caused by shiny background conveyor components at high throughput rates up to 1500Hz.

1500 Hz Switching FrequencyBackground SuppressionPinPoint LEDPackaging Automation

2. Harsh Washdown Environment Sensing

Operates reliably in food and beverage processing equipment requiring daily high-pressure, high-temperature chemical washdowns.

Problem Solved

Prevents sensor failure and machine downtime caused by water ingress during intensive cleaning procedures.

IP69K Enclosure RatingVISTAL HousingWashdown SensingFood Processing

3. Cold Storage Material Handling

Identifies the presence and position of pallets and totes in sub-zero refrigerated warehousing environments.

Problem Solved

Ensures continuous logistics tracking and prevents sensor malfunctions in extreme deep-freeze conditions down to -40 °C.

-40 °C Operating TemperaturePNP OutputMaterial HandlingCold Storage Automation
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