K=1 Sensors | McMaster-Carr

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24 Products

About Proximity Sensors

Compare sensing types, mounting styles, wiring options, and input and output requirements to choose the right proximity sensor for your application.

No-Distance-Correction DC Metallic-Object Proximity Sensors

Flush with Wire Leads

Flush with Plug

Projecting with Wire Leads

Projecting with Plug


3-Pole M8 Plug	3-Pole M12 Plug

Eliminate the need to calculate the sensing distance when using different metals—these sensors sense all metal at the same distance. Also known as inductive proximity sensors, they remotely sense metallic objects even if they’re obscured by water, oil, dirt, or a surface finish. They’re often used with programmable logic controllers (PLCs). All meet American, Canadian, and European safety standards. They’re also rated IP66, IP68, and IP69K for protection against dust, temporary submersion, and high-pressure, high-temperature washdowns. Also known as K=1 sensors.

To view wiring diagrams, select a part number and click Product Detail.

Also available: If you don’t see the sensor you need, please select 1953N999 and specify manufacturer and manufacturer part number.

Stainless Steel Housing—Stainless steel sensors resist corrosion better than brass sensors. They’re best for harsh environments.

Flush Mount—Flush sensors, also known as embeddable or shielded sensors, can be mounted so that the sensor face is level with the surface of any material, including metal. They’re more accurate than projecting sensors at close range and can be mounted close together without causing interference.

Projecting Mount—Projecting sensors, also known as non-embeddable or unshielded sensors, must be mounted with the area around the sensor face free of metal. They have a longer sensing distance than flush sensors.

Plug In—Sensors with a plug connect to cables with a socket (sold separately), allowing you to quickly connect and disconnect the sensor.

	Sensors														Cables with Sockets
	Switch Starting Position	Dia., mm	Max. Sensing Distance, mm	Output Digital Signal	Input Voltage	Current Output	Electrical Connection Type	No. of Wire Leads	Lg., mm	Circuit Protection	Cable Lead Lg., ft.	Temp. Range, ° F		Each		Each
White Bronze-Plated Brass Housing with Plastic Face (IP66, IP68, IP69K)







				Flush with 3-Pole M12 Plug Connection and LED Status Indicators

				1 Off	12	4	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N615	000000	6897K26	000000




						Projecting with 3-Pole M12 Plug Connection and LED Status Indicators

						1 Off	12	10	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N616	00000	6897K26	00000


						Stainless Steel Housing with Plastic Face (IP66, IP68, IP69K)







										Flush with 3-Pole M12 Plug Connection and LED Status Indicators

										1 Off	12	4	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N4	00000	6897K26	00000


										1 Off	12	4	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N43	00000	6897K26	00000
										1 Off	18	8	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N46	00000	6897K26	00000
										1 Off	18	8	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N49	00000	6897K26	00000
										1 Off	30	15	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N52	00000	6897K26	00000
										1 Off	30	15	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N53	00000	6897K26	00000




												Flush with 3-Pole M8 Plug Connection and LED Status Indicators

												1 Off	8	3	PNP	10V DC to 30V DC	100 mA	Plug In	—	40	Overload Short Circuit	—	-40 to 185	1953N611	00000	7138K14	00000




														Flush with Wire Lead Connection and LED Status Indicator

														1 Off	8	3	PNP	10V DC to 30V DC	100 mA	Hardwire	3	38	Overload Short Circuit	6 1/2	-40 to 185	1953N613	00000	———	0




																Projecting with 3-Pole M12 Plug Connection and LED Status Indicators

																1 Off	12	8	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N41	00000	6897K26	00000


																1 Off	12	8	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N44	00000	6897K26	00000
																1 Off	12	10	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N42	00000	6897K26	00000
																1 Off	12	10	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N45	00000	6897K26	00000
																1 Off	18	12	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N47	00000	6897K26	00000
1 Off																18	12	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N5	00000	6897K26	00000
1 Off	18															15	PNP	10V DC to 30V DC	100 mA	Plug In	—	45	Overload Short Circuit	—	-40 to 185	1953N48	00000	6897K26	00000
1 Off	18															15	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N51	00000	6897K26	00000
1 Off	30															22	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N54	00000	6897K26	00000
1 Off	30															30	PNP	10V DC to 30V DC	100 mA	Plug In	—	60	Overload Short Circuit	—	-40 to 185	1953N55	00000	6897K26	00000




		Projecting with 3-Pole M8 Plug Connection and LED Status Indicators

		1 Off	8													6	PNP	10V DC to 30V DC	100 mA	Plug In	—	40	Overload Short Circuit	—	-40 to 185	1953N612	00000	7138K14	00000




				Projecting with Wire Lead Connection and LED Status Indicator

				1 Off	8											6	PNP	10V DC to 30V DC	100 mA	Hardwire	3	38	Overload Short Circuit	6 1/2	-40 to 185	1953N614	00000	———	0