42KA-T2KNFK-A2

Ultra Mini Photo Sensor

Name: Ultra Mini Photo Sensor
Brand: Rockwell Automation
SKU: 42KA-T2KNFK-A2

Serial #:

Lifecycle status: Active

Description

PHOTOSWITCH Photoelectric Sensor, Ultra Miniature Flat Pack, 500mm (19.7in), Transmitted Beam Pair, w/ sensitivity adjustment, DC - Dark Operate, Sink (NPN), Face View

Lifecycle status: Active

Description

PHOTOSWITCH Photoelectric Sensor, Ultra Miniature Flat Pack, 500mm (19.7in), Transmitted Beam Pair, w/ sensitivity adjustment, DC - Dark Operate, Sink (NPN), Face View

Unique Product Identifier	42KA-T2KNFK-A2
UPC	662468476324
Estimated Lead Time	167 days
Standard Warranty Duration	1 year See details
Country of Origin	Japan

Sensing Mode	Transmitted Beam Pair
Sensitivity Adjustment	Manually Adjustable
Standard	UL Certified

1:1 margin	50 cm
Connection type	Source: 2 conductor 500V PVC jacketed cable 6.5 ft (2m)
LED status	Red ON: output energized
Leakage current, max	0.5 µa
Lens material	Polycarbonate
Material housing	Other
Max. output current	80 mA
Operating voltage	24V DC (±10%)
Optics position	Face view (with sensitivity adjustment)
Output energized	Dark
Pre failure notice	False
Protection type	Transient noise
Rated control supply voltage at DC	24 V
Response time	0.5 ms
Scope of delivery of the one-way system	Transmitter and receiver
Setting procedure	Manual adjustment
Supply current	Source: 15 mA, Receiver: 22 mA
Transmitting LED	Visible red 660nm
Type of electric connection	Cable
Type of light	Multi-coloured LED
Type of switching output	NPN
Voltage type	DC
Wavelength of the sensor	660 nm
With communication interface AS-Interface	False
With communication interface CANOpen	False
With communication interface DeviceNet	False
With communication interface Ethernet	False
With communication interface INTERBUS	False
With communication interface PROFIBUS	False
With communication interface RS-232	False
With communication interface RS-422	False
With communication interface RS-485	False
With communication interface SSD	False
With communication interface SSI	False
With communication interface analogue	False
With reflector	False
With time function	False

Ambient temperature	-13 °F
Ambient temperature, max	-25 °C
Max. opening angle	50 °
Relative humidity, max	85 %

Mechanical

Degree of protection (IP)	IP40
Degree of protection (NEMA)	1
Height of sensor	18 mm
Length of sensor	3.5 mm
Max. switching distance	500 mm
Sensing mode	Light switching
Sensitivity adjustment	Potentiom
Suitable for safety functions	False
Weight, max	40 g
Width sensor	12.5 mm

Construction

Housing material	Polyester
Material of cable sheath	Polyvinyl chloride (PVC)
Material of optical surface	Plastic

Drawings
3D STEP Model (STP)	Download (ZIP)
Product Drawing	Drawing (DWG)

Drawings
3D STEP Model (STP) Download (ZIP)
Product Drawing Drawing (DWG)

General	Publication
Product Cutsheet	--

Installation Instructions	Publication
42ka-in001_-en-p	42KA-IN001

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UKCA DOC

This product was certified with the above certifications as of 2026-07-16. Products sold before or after this date might carry different certifications. Please review the product label to check for the certifications your specific product carries.

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Regulatory Information

EU Importer Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium
EU Authorized Representative Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium

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Technotes

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Overview

Unique Product Identifier	42KA-T2KNFK-A2
UPC	662468476324
Estimated Lead Time	167 days
Standard Warranty Duration	1 year See details
Country of Origin	Japan

Electrical & Connectivity

Sensing Mode	Transmitted Beam Pair
Sensitivity Adjustment	Manually Adjustable
Standard	UL Certified

1:1 margin	50 cm
Connection type	Source: 2 conductor 500V PVC jacketed cable 6.5 ft (2m)
LED status	Red ON: output energized
Leakage current, max	0.5 µa
Lens material	Polycarbonate
Material housing	Other
Max. output current	80 mA
Operating voltage	24V DC (±10%)
Optics position	Face view (with sensitivity adjustment)
Output energized	Dark
Pre failure notice	False
Protection type	Transient noise
Rated control supply voltage at DC	24 V
Response time	0.5 ms
Scope of delivery of the one-way system	Transmitter and receiver
Setting procedure	Manual adjustment
Supply current	Source: 15 mA, Receiver: 22 mA
Transmitting LED	Visible red 660nm
Type of electric connection	Cable
Type of light	Multi-coloured LED
Type of switching output	NPN
Voltage type	DC
Wavelength of the sensor	660 nm
With communication interface AS-Interface	False
With communication interface CANOpen	False
With communication interface DeviceNet	False
With communication interface Ethernet	False
With communication interface INTERBUS	False
With communication interface PROFIBUS	False
With communication interface RS-232	False
With communication interface RS-422	False
With communication interface RS-485	False
With communication interface SSD	False
With communication interface SSI	False
With communication interface analogue	False
With reflector	False
With time function	False

Compliance & Environment

Ambient temperature	-13 °F
Ambient temperature, max	-25 °C
Max. opening angle	50 °
Relative humidity, max	85 %

Physical Characteristics

Mechanical

Degree of protection (IP)	IP40
Degree of protection (NEMA)	1
Height of sensor	18 mm
Length of sensor	3.5 mm
Max. switching distance	500 mm
Sensing mode	Light switching
Sensitivity adjustment	Potentiom
Suitable for safety functions	False
Weight, max	40 g
Width sensor	12.5 mm

Construction

Housing material	Polyester
Material of cable sheath	Polyvinyl chloride (PVC)
Material of optical surface	Plastic

Drawings

Drawings
3D STEP Model (STP)	Download (ZIP)
Product Drawing	Drawing (DWG)

Drawings
3D STEP Model (STP) Download (ZIP)
Product Drawing Drawing (DWG)

Documents

Product Cutsheet General
--

42ka-in001_-en-p Installation Instructions
42KA-IN001

General	Publication
Product Cutsheet	--
Installation Instructions	Publication
42ka-in001_-en-p	42KA-IN001

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Find curated technical documentation for this product in the Technical Documentation Center, or search our full Literature Library.

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Certifications

${name=UKCA DOC, link=http://literature.rockwellautomation.com/idc/groups/literature/documents/ct/42-ct016_-en-e.pdf}$

UKCA DOC

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Regulatory Information

EU Importer Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium
EU Authorized Representative Address	Rockwell Automation N.V Pegasus Park De Kleetlaan 12A 1831 Diegem Belgium

Accessories

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Alternative Products

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Technotes

Technotes

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