Direct Sensor Switches | McMaster-Carr

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127 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.

Photoelectric Switches

Photoelectric Switches with Relay Output

A built-in relay produces AC voltage output. These switches are often used with older programmable logic controllers (PLCs).

Time-Delay Photoelectric Switches with Relay Output

Set these switches to delay activation by up to five seconds after detecting an object.

Photoelectric Switches

Detect the presence or absence of an object moving at high speeds with a light beam. These switches have a longer sensing distance than proximity and ultrasonic switches.

Miniature Photoelectric Switches

About half the size of standard photoelectric switches, these switches are good for use in tight spaces. They detect objects moving at high speeds with a light beam.

Space-Saving Photoelectric Switches

With a narrow, flat body, these switches fit in tight spaces.

Precision Photoelectric Switches

Detect objects as thin as a freshly sharpened pencil tip. These switches are best for tight spaces because they have a smaller light beam and can detect smaller objects than standard photoelectric switches.

Wide Beam Photoelectric Switches

Detect irregularly shaped items with a band of light up to 10 times larger than the beam on a standard photoelectric switch.

Harsh Environment Photoelectric Switches

Rated IP69K, these switches can withstand high-pressure, high-temperature washdowns and temporary submersion.

Roller-Conveyor-Mount Photoelectric Switches

A slim design and a light beam that’s angled upwards allow these switches to sense objects from between conveyor rollers.

Fiber-Optic Photoelectric Switches

The highly flexible fiber-optic cable and small sensing end help you position these switches in hard to reach areas.

Time-Delay Fiber-Optic Photoelectric Switches

Set these switches to delay activation by up to fifteen seconds after detecting an object.

Sanitary Photoelectric Switches

Maintain sanitary standards—these switches have smooth surfaces without crevices, so they prevent bacteria from building up and are easy to clean.

Photoelectric Transmitters

Photoelectric Distance-Measuring Transmitters

With a single device, continuously monitor the distance of moving items and turn equipment on and off based on their position.

Photoelectric Color-Measuring Transmitters

Monitor the color of products as they pass by on your line. These transmitters don’t just detect if color is in mint condition—they also turn equipment on or off, all with a single device.