Presence Sensors | McMaster-Carr

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1,012 Products

Electrical Power, Networking, and Controlling

Photoelectric Sensors

Detect objects from longer distances than proximity and ultrasonic sensors

263 products

Proximity Sensors

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

428 products

Switch Mounts

Mount switches to panel cutouts, tank walls, or conveyors

2 products

Ultrasonic Sensors

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

21 products

Switch Mats

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

43 products

Photoelectric Sensor Reflectors

Pair with reflector photoelectric sensors to bounce light back at them

38 products

Automatic Door Switches

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

4 products

Safety Light Curtains

Immediately cut power to machinery when anything blocks the light beam

65 products

Safety Light Curtain Mirrors

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

10 products

Switch Padding

Trigger an emergency stop when robot arms contact a worker or object

4 products

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

6 products

Safety Relays

Monitor circuits and force machines to a safe stop if the relay detects a fault

5 products

Lighting

Light Switch Sensors

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

80 products

Light Switch Sensor Controllers

Turn lights on and off or dim them in unison from a secure Bluetooth network

9 products

Light Switches

Manually turn lights on and off

2 products

Facility and Grounds Maintenance

Faucet Repair Parts

Replace faucet parts such as valves, O-rings, washers, and nuts

14 products