SICK Retroreflective Photoelectric Sensor, Block Sensor, 2 m Detection Range

RS Stock No.:: 205-5188
Mfr. Part No.:: WL12-3N2451
Brand:: SICK

SICK Retroreflective Photoelectric Sensor, Block Sensor, 2 m Detection Range

Subtotal (1 unit)*

£185.36

(exc. VAT)

£222.43

(inc. VAT)

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Shipping from 08 December 2025

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Units	Per unit
1 +	£185.36

*price indicative

Photoelectric Sensors to Sensors & Actuator Cables

Don’t Forget the Cables

Photoelectric sensors need the right cables to connect, communicate, and perform reliably. Our range of sensors & actuator cables are designed for secure connections, fast installation, and long-lasting durability. If you're selecting sensors, make sure to explore compatible cables to complete your setup and ensure optimal performance in your application.

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RS Stock No.:: 205-5188
Mfr. Part No.:: WL12-3N2451
Brand:: SICK

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	SICK
	Sensor Style	Block
	Detection Type	Retroreflective
	Detection Range	2 m
	Output Type	NPN
	Electrical Connection	M12 Connector
	Maximum DC Voltage	30V
	Terminal Type	4 Pin Connector
	Light Source	LED
	IP Rating	IP66, IP67, IP69K
	Response Time	<330 μs
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	+60°C
	Housing Material	Metal
	Series	W12-3

	Select all
	Brand SICK
	Sensor Style Block
	Detection Type Retroreflective
	Detection Range 2 m
	Output Type NPN
	Electrical Connection M12 Connector
	Maximum DC Voltage 30V
	Terminal Type 4 Pin Connector
	Light Source LED
	IP Rating IP66, IP67, IP69K
	Response Time <330 μs
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature +60°C
	Housing Material Metal
	Series W12-3

Datasheet - WL12-3N2451

COO (Country of Origin):: DE

Overview

The W12-3 family features a complete range of photoelectric sensors that are enclosed in a metal housing. There are a large number of variations that are available, including proximity, retro-reflective, through-beam, special laser and clear material versions. These sensors offer many advantages over conventional optical sensors due to their reliable object detection and monitoring capabilities. Whether in packaging, pharmaceutical, or the food and beverage industries – the W12 family provides a solution for any application.

At a glance

Best-in-class optical performance due to superior OES technology
Autocollimation with retro-reflective sensors
Background and foreground suppression with second emitter LED on proximity sensors
Highly visible, precise light spot and high-energy IR transmitters
Rugged die-cast zinc housing, optional with Teflon® coating
Mounting options with through holes, base blind holes, oblong through holes and dovetail
Flexible sensor settings, monitoring, advanced diagnostics, and visualization thanks to IO-Link

Your Benefit

Reliable detection due to superior ASIC (application-specific integrated circuit) technology and immunity to optical interference factors from the industrial environment
PinPoint LED technology provides a bright, small and precise light spot that enables quick and easy sensor alignment
Precise switching characteristics ensure reliable object detection, reducing downtime caused by re-adjusting sensors during recipe changes
Wide range of products enclosed in a rugged metal housing enables application flexibility in a broad range of industrial environments
Flexible mounting options reduce installation time
IO-Link provides easy data access from the PLC
Quick and easy configuration
Quick and easy integration using function blocks

Applications

Type check for bodyparts
Presence and type checking for seat underframe components
Collision prevention at robot grippers
Robot guidance for installation of windshields
Loop control: loop measurement
Flexible sensor adjustment for the detection of transparent objects
Flexible configuration of the sensor for different packaging
Flexible Parametrierung des Sensors für unterschiedliche Verpackungen
Measuring the height of the paper stack
Paper tear monitor
Presence check for paper
Detection of paper edges
Leading edge detection and presence checking
Stack positioning
Sheet presence and punch monitoring
Sheet presence and position monitoring
Identifying stacks
Positioning of the sheet pallet
Board detection
Integrated speed and length measurement for sawmill applications
Cutting protruding edges
Integrated placement analysis
Checking the presence and position of trays
Checking presence in an ultrasonic welding station
Inline quality control on a sensor rake
Identification of direct-marked 2D codes
Dynamic measurement of gaps between objects with Smart Sensor Solutions
Monitoring of sorter tipping
Speed measurement with Smart Sensors

Note

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