Indicator Lamps | McMaster-Carr

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1,154 Products

Communication

Indicator Lights

Call attention to hazards and changes in status with flashing, strobe, and other lights

235 products

Audible Alarms/Indicator Lights

Alert people with both light and sound

64 products

Barricade Lights

Mount to barricades so they're easier to see in low-light conditions

3 products

Vehicle Lights

Illuminate your way, mark your vehicle's clearance, or send signals to people and drivers

6 products

Aircraft Signal Lights

Mount to the top of towers to warn low-flying aircraft

2 products

Traffic Lights

Signal and direct traffic

13 products

Text Telephone Adapters

Make it easier for people who are hard of hearing or speech-impaired to use phones

1 product

Lighting

Light Bulbs

Standard household, miniature, compact, tubular, ultraviolet, infrared, and blacklight bulbs

635 products

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

16 products

Light Transmitters

Light up small and hard-to-reach areas such as the inside of models, prototypes, and circuit boards

18 products

Electrical Power, Networking, and Controlling

Electronic Component Assortments

Include diodes, rectifiers, and transistors to convert current or amplify electronic signals

1 product

Measuring and Inspecting

Force Gauges

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

11 products

Inspection Indicators

Mount to your equipment for a signal when it's time for maintenance or inspection

4 products

Fluid Handling

Water Detectors

Place near tanks, sump pumps, and pipe lines to alert you to water leaks

2 products

Safety Equipment

Multi-Gas Detectors

Monitor air for carbon monoxide and combustible gases including methane, hydrogen, and propane

8 products

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

3 products

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

4 products

Propane Detectors

Alarms and lights alert you to the presence of propane instantly or after a set exposure time

1 product

Methane Detectors

Alarms and lights alert you to the presence of methane instantly or after a set exposure time

1 product

Barricades

Panel, rail, cone-mount, barrel, and water-fill barricades

5 products

Smoke Detectors

Warn people when there's smoke in your facility

9 products

Carbon Monoxide Detectors

Alarms, lights, or color changes alert you to the presence of carbon monoxide

6 products

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

6 products

Sound Level Monitors

Continuously measure ambient sound levels to confirm they fall within your programmed thresholds

3 products

Fire Alarms

Alert people to fires with loud warnings

4 products