Name: SICK WTB9M4-3N2261 Photoelectric Sensor - INOSAKI
SKU: SICK-1051885
Price: 186.57 USD
Availability: InStock

Technical Overview

High-performance photoelectric proximity sensor with background suppression. Features 20-350mm range, NPN output, IP69K VISTAL housing, and 1.5kHz frequency.

Key Features

Reliable object detection from 20 mm to 350 mm via precise background suppression.
Ultra-rugged VISTAL plastic housing provides exceptional mechanical robustness.
Visible red PinPoint LED (650 nm) ensures a highly visible and precise light spot.
NPN complementary output with a fast 1500 Hz switching frequency for high-speed applications.
IP66, IP67, and IP69K enclosure ratings suitable for high-pressure washdown environments.
Wide operating temperature range from -40 °C to +60 °C.
Standardized connectivity via a 4-pin M8 male connector.

Technical Specification Matrix

Parameter	Value
Sensor Type	Photoelectric Proximity Sensor
Detection Principle	Background Suppression
Sensing Range	20 mm to 350 mm
Light Source	PinPoint LED, Visible Red Light (650 nm)
Light Spot Size	Ø 4.5 mm at 75 mm distance
Supply Voltage	10 V DC to 30 V DC
Output Type	NPN, Complementary
Output Current (Imax)	≤ 100 mA
Response Time	< 0.333 ms
Switching Frequency	1500 Hz
Connection Type	Male Connector M8, 4-pin
Adjustment	Potentiometer, 5 turns
Housing Material	Plastic, VISTAL
Enclosure Rating	IP66 / IP67 / IP69K
Ambient Operating Temperature	-40 °C to +60 °C
Physical Weight (kg)	0.04
Dimensions L x W x H (cm)	2.36 x 1.22 x 4.98

Industrial Applications

1. Food Packaging Line Object Detection

Identifies packages accurately on high-speed conveyors regardless of their color or surface finish.

Problem Solved

Prevents false triggers from shiny backgrounds or varying packaging colors, ensuring seamless sorting and counting.

Background SuppressionHigh-Speed ConveyorIP69K WashdownPhotoelectric Sensing

2. Automotive Parts Presence Verification

Detects the presence and correct positioning of small metallic or plastic components during robotic assembly.

Problem Solved

Overcomes optical interference from reflective metallic backgrounds, improving automated assembly precision.

Parts PresenceVISTAL HousingPinPoint LEDNPN Output

3. Material Handling and Logistics

Reliably detects passing totes or cartons on a conveyor system for automated routing and sorting.

Problem Solved

Solves skipped detections caused by dark or irregular surfaces without being triggered by the conveyor belt itself.

Material HandlingConveyor Routing1500Hz SwitchingObject Detection