K=1 Sensors | McMaster-Carr

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Product Family

3D Printer Extruder Heating Elements

Abrasive Blaster Safety Switches

Air Cylinders

Air-Actuated Switches

Audible Alarms/Indicator Lights

Automatic Door Switches

Barometers

Brackets

Cam Locks and Latches

Ceiling and Wall Lights

Center Finders

Center Punch/Angle Indicators

Chemistry Meters

Combination Square Blades

Housing Material

Material

Benzoic Acid Isoamyl Ester

System of Measurement

Diameter

Output Digital Signal

NAMUR

NPN

PNP

Electrical Connection

1/2" Circular Connector

2-Pin Pin-and-Housing Connector

Flat-Pin Mini Thermocouple Connector

Round-Pin Thermocouple Connector

Mounting Thread Size

Electrical Connection Type

Input Voltage

Number of Wire Leads

Length

Switch Starting Position

Environment

High-Pressure Washdown

High-Temperature Washdown

Number of Poles

Sensor Type

Sensing Direction

Sensing Distance

Enclosure Rating

Maximum Temperature

1,000° F to 1,999.9° F

2,000° F to 2,999.9° F

RoHS

Compliant with Exemptions

Not Compliant

For Use With

Alcohol-Based Solvents

Printed Circuit Boards

Safety Light Curtains

Screws and Nuts

Solids

DFARS Specialty Metals

Exempt

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Not Compliant

Export Control Classification Number (ECCN)

Detects

Help me decide (beta)

8,373 Products

Electrical Power, Networking, and Controlling

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

294 products

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

89 products

Limit Switches

Turn equipment on or off when objects touch the actuator; often used for conveyors and bin filling

111 products

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

49 products

Ultrasonic Sensors

Measure the distance to objects and the level of liquids and materials

8 products

Speed-Monitoring Switches

Avoid downtime and machinery damage by detecting slowdowns in drive trains and conveyors

1 product

Safety Light Curtains

Immediately cut power to machinery when anything blocks the light beam

48 products

Rotary Encoders

Track the distance, direction, and speed of travel of motor shafts, conveyors, and wheels

34 products

Vibration Switches

Monitor vibration in machinery and shut it down or sound an alarm if levels rise

10 products

Finger-Touch Switches

Lightly touch with your finger to turn circuits on and off

18 products

Snap-Acting Switches

Open and close circuits quickly to minimize arcing and sticking; often used as door-open indicators

29 products

Safety Switches

Protect people by cutting power to machines when access doors open; also known as interlock switches

12 products

Safety Light Curtain Mirrors

Deflect beams from a set of safety barrier switches to form a perimeter around machinery

10 products

Switch Mounts

Mount switches to panel cutouts, tank walls, or conveyors

1 product

Automatic Door Switches

Doors open when you touch a button or the switches detect motion

16 products

Switch Mats

Step on a mat to actuate circuits, often to control doors, lights, and alarms

6 products

Air-Actuated Switch Actuators

Pair with a switching mechanism to create a custom air-actuated switch

5 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

2 products

Metric Circular Cords

Send power and control signals to equipment with metric connections

8 products

Fluid Handling

Pressure Transmitters

Send pressure readings to controllers and remote displays

365 products

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

97 products

Differential Pressure Sensors

Attach to gauges and switches to detect static pressure changes in air-handling equipment

5 products

Pressure Gauges

Measure pressure in pumps, filters, regulators, and process lines

5 products

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

67 products

Pitot Tubes

Connect to gauges to measure air flow in filters, cooling coils, and other air-handling equipment

4 products

Pressure Test Gauges

Check and calibrate pressure gauges, transmitters, and equipment to maintain accuracy

611 products

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

17 products

Vacuum Test Gauges

Verify that equipment is taking accurate vacuum measurements

8 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

657 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

144 products

Thermowells

Prevent damage to thermometers and temperature probes in pressurized tanks and pipelines

115 products

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

29 products

Temperature Switches

Turn heating equipment on or off at a specified temperature

8 products

Thermocouple and RTD Protection Tubes

Shield thermocouple and RTD probes in large, unpressurized tanks

13 products

RTD Transmitters

Send temperature readings from RTD probes in containers, tanks, and pipes to switches and PLCs

1 product

Thermocouple Connector Adapters

Convert round-pin male connectors to flat-pin male connectors

10 products

RTD Connectors

Attach plug-in connectors to RTD probes with wire leads

2 products

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

155 products

Thermocouple Transmitters

Check system temperatures from your smartphone or tablet

2 products

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

308 products

Differential Pressure Switches

Activate controls and alarms when the pressure difference between process lines exceeds a setpoint

47 products

Vacuum Switches

Activate controls, set off alarms, and power equipment when a set vacuum is reached

26 products

Pressure and Vacuum Switches

Activate controls, set off alarms, and power equipment when a set pressure or vacuum is reached

7 products

Level Sensor Switches

Activate equipment by detecting the liquid level in a tank

17 products

Float Switches

Start process equipment such as pumps and motors when the liquid in your tank reaches the float

57 products

Flow Switches

Turn equipment on or off when flow rate reaches a set point

171 products

Paddle Level Switches

Actuate when the paddle stops rotating to indicate the level of dry material

6 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

72 products

Liquid-Level Transmitters

Send liquid-level data to logging and monitoring equipment

20 products

Liquid-Level Gauges

Monitor fluid levels in containers

210 products

Measuring and Inspecting

Thermometer Cooling Jackets

Connect to a compressed air or water line to keep infrared thermometer transmitters from overheating

1 product

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

420 products

Thermometer Air Purges

Blow dust and moisture off infrared thermometer transmitter lenses

1 product

Thermometer Covers

Prevent dirt buildup on infrared thermometer transmitters

1 product

Temperature Crayons

Less messy than liquids, draw marks that melt as surfaces reach a specific temperature

72 products

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

4 products

Humidity-Indicating Plugs

Monitor humidity in sealed containers without opening them, protecting the inside from contamination

6 products

Humidity Meters

Measure relative humidity without complex calculations

1 product

Load Cells

Measure forces and send them to computers to monitor and trigger actions in machinery

299 products

Torque Gauge Connectors

Replace square-drive connectors on torque gauges

3 products

Force Gauges

Test objects to see how much tension and compression force they can bear

109 products

Torque Sensors

Convert manually applied torque into an electrical signal that you can measure and record

22 products

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Force Gauge Grips

Pair with force gauges to test wire, pins, and thin sheets

4 products

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

70 products

Vibration Monitors

Mount to your machine to continuously monitor vibration and ensure it stays within the proper range

13 products

Tachometers

Measure the speed of rotating parts on machines such as shafts, gears, and belts

23 products

Vibration Meters

Spot-check vibration to gauge the health of your machine

3 products

Stroboscopes

Shine a bright flashing light at moving belts and pulleys to measure speed and detect wear

6 products

Data Recorders

Log temperature, humidity, or pressure levels to track changes and troubleshoot your system

45 products

Stud Finders

Pinpoint the location of metal or wood studs in drywall, plywood, and other materials

5 products

Optical Comparators

Magnify your part to check for dimensional accuracy and surface defects

13 products

Center Finders

Line up your drill with the center of round bars and pipe

1 product

Straightedges

Draw straight lines and check the straightness of surfaces

1 product

Center Punch/Angle Indicators

Find the center of pipe and other parts and determine setup angles on milling machines and grinders

5 products

Angle Transfers

Duplicate any angle in construction and other applications

2 products

Squares

Check 90° angles during layout work with combination, angle, or pipefitters' squares

111 products

Protractors

Set bevels and measure angles with everything from pocket-size to long-arm protractors

16 products

Squareness Gauges

Check frames and machined parts to see if they are leaning or uneven

3 products

Angle Indicators

Align pipe and other equipment by measuring angle, level, or tilt

8 products

Angle Identifiers

Place the edges against fittings, dies, and other objects to quickly verify angles up to 45°

1 product

Combination Square Heads

Attach combination square blades to form a combination square

28 products

Combination Square Blades

Connect to a combination square head to create a combination square

17 products

Levels

Ensure surfaces are completely horizontal or vertical

156 products

Machine Tool Indicator Contact Points

Replace the contact point on your machine tool indicator

3 products

Machine Tool Indicators

Find the exact edge of a workpiece without math or guesswork to quickly align your machining setup

6 products

Chemistry Meters

Take water-chemistry measurements more precisely than test strips and swabs

6 products

Magnetic Field Indicators

Measure the strength of a magnetic field in gauss

8 products

Barometers

Measure atmospheric pressure changes

2 products

Building and Machinery Hardware

Positioning Arms

Mount and position tools and other small equipment

22 products

Brackets

Connect surfaces in an assembly

58 products

Cam Locks

Unlock with a key, magnetic fob, screwdriver, or number combination

30 products

Safety Equipment

Heat Stress Monitors

Measure temperature, humidity, and radiant heat to keep people safe from heat-related hazards

9 products

Fire Alarms

Alert people to fires with loud warnings

9 products

Material Handling

Conveyor Brackets

Mount guide clamps, sensors, drip pans, and other attachments to conveyor frames

7 products

Conveyor Accessory Mounts

Position guides or sensors to the exact spot needed for your conveyor

54 products

Forklift Fork Level Indicators

Mount to your forklift's mast to check if forks are level from the driver's seat

1 product

Lighting

Ceiling and Wall Lights

Mount to ceilings or walls to light up large spaces

59 products

Floodlights

Illuminate large, outdoor spaces with a wide-angle light

39 products

Security Lights

Deter intruders, improve nighttime visibility, and draw attention to dark areas

8 products

Enclosure Lights

Brighten enclosures and small spaces such as closets and drawers

4 products

Light Poles

Bring light to your parking lot or walkway in minutes, or replace damaged poles

16 products

Landscape Lights

A directed beam of light illuminates paths, signs, flags, and landscape elements

2 products

Light Switch Sensors

Automatically turn lights on and off when you enter and exit rooms

1 product

Light Switch Sensor Guards

Protect light switch sensors from damage and vandalism

5 products

Power Transmission

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

2,220 products

Hydraulic Cylinders

Push and pull heavy loads to operate forklifts, compactors, and other machinery

188 products

Stopper Cylinders

Extend to stop loads on a conveyor and retract to let them pass

13 products

Parts Metering Cylinders

Space out parts to control flow on conveyors and feeders

12 products

Fastening and Joining

Screwdrivers

Tighten and loosen screws

1 product

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

24 products

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

2 products

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

83 products

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

Replace flame detectors in HVAC equipment such as furnaces, ovens, water heaters, and boilers

1 product

HVAC Switches

Control and monitor airflow in HVAC systems automatically

3 products

Exhaust Fans

Draw stagnant and humid air out of a room or area

2 products

Communication

Audible Alarms/Indicator Lights

Alert people with both light and sound

2 products

Traffic Lights

Signal and direct traffic

2 products

Audible Door Alarms

An alarm sounds if someone opens a door without using the code or key

7 products

Fabricating and Machining

Temperature Sensors for 3D Printer Extruder Heating Elements

Measure heating block temperature and send it to printer controllers

4 products

3D Printer Extruder Heating Elements

Replace your entire heating element, or switch it out to print at higher speeds or temperatures

1 product

Abrasive Blaster Safety Switches

Shut off abrasive blasters if the operator loses control; also known as deadman switches

3 products