Alarms | McMaster-Carr

Filter by

System of Measurement

Voltage

Volume (Sound) @ Distance

Power Source

Audible Signal Type

Electrical Connection

Light Color

Environment

Current @ Voltage

Signal Type

Sound Pattern

Mounting Location

Volume Control

Diameter

Mount Type

Number of Wire Leads

Material

Height

Light Setting

Bulb Type

RoHS Compliance

Enclosure Rating

Color

How can we improve?

898 Products

Communication

Audible Alarms

Everything from bells and whistles to horns and sirens

Indicator Lights

Indicator Lights

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

Audible Alarms/Indicator Lights

Audible Alarms/Indicator Lights

Alert people with both light and sound

Sump Pump Alarms

Sump Pump Alarms

Warn you when water levels in your sump pump rise too high

Traffic Lights

Signal and direct traffic

Scheduling Timers

Scheduling Timers

Program to signal routine events throughout the week, such as lunch and breaks

Aircraft Signal Lights

Aircraft Signal Lights

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

Measuring and Inspecting

Wristwatches

Display the time, date, and smart functions on your wrist and keep your hands free

Timers

Count up or down to measure a period of time

Stopwatches

Track time or record an event from start to finish

Radiation Detectors

Radiation Detectors

Test for radiation, even in low amounts or from microwave ovens

Leak-Detecting Pipe Flange Covers

Leak-Detecting Pipe Flange Covers

Wrap around pipe flanges to show when there's a leak and contain it

Gas Leak Detectors

Gas Leak Detectors

Find gas leaks in pipes, tubes, fittings, tanks, cylinders, and valves

Barometers

Measure atmospheric pressure changes

Temperature and Humidity Meters

Temperature and Humidity Meters

Simultaneously measure temperature and relative humidity

Thermometers

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

Static Charge Meters

Static Charge Meters

Locate and accurately measure static charges in environments with sensitive electronic equipment

Vibration Meters

Vibration Meters

Spot-check vibration to gauge the health of your machine

Vibration Monitors

Vibration Monitors

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

Sound Level Meters

Sound Level Meters

Measure noise levels to determine if an area requires hearing protection

Data Recorders

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

Safety Equipment

Smoke Detectors

Smoke Detectors

Warn people when there's smoke in your facility

Fire Alarms

Alert people to fires with loud warnings

Fire Extinguisher Alarms

Fire Extinguisher Alarms

Discourage theft and vandalism by sounding an alarm if anyone moves your fire extinguisher

Fire Alarm Pull Stations

Fire Alarm Pull Stations

Activate to send a signal to your control panel if there's a fire

Fire Alarm Station Covers

Fire Alarm Station Covers

Shield your fire alarm pull stations from damage and tampering

Heat Detectors

Signal your control panel when the temperature rises above a set level

Carbon Dioxide Meters

Carbon Dioxide Meters

Measure and display real-time carbon dioxide levels for indoor ventilation quality

Carbon Monoxide Detectors

Carbon Monoxide Detectors

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

Multi-Gas Detectors

Multi-Gas Detectors

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

Methane Detectors

Methane Detectors

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

Propane Detectors

Propane Detectors

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

Hydrogen Detectors

Hydrogen Detectors

Alarms and lights alert you to the presence of hydrogen

Oxygen Detectors

Oxygen Detectors

Too much or too little oxygen triggers alarms and warning lights

Heat Stress Monitors

Heat Stress Monitors

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

Hydrogen Sulfide Detectors

Hydrogen Sulfide Detectors

Alarms and lights alert you to high levels of hydrogen sulfide

Sound Level Monitors

Sound Level Monitors

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

Electrical

Control Panels

Connect and monitor your fire alarm system

Magnetic Switches

Magnetic Switches

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

Vibration Switches

Vibration Switches

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

Programmable Logic Controller Input and Output Modules

Programmable Logic Controller Input and Output Modules

Connect switches, transmitters, and actuators to your PLC for complex automation jobs

Outlet Strips

Plug in multiple devices to power them from a single outlet

Electrical Connectors and Cords

Electrical Connectors and Cords

Supply power to equipment by combining plugs, sockets, receptacles, and cords

Fluid Handling

Pressure Transmitter Displays

Pressure Transmitter Displays

Remotely view pressure readings sent from a transmitter

Differential Pressure and Vacuum Gauges

Differential Pressure and Vacuum Gauges

Show changes in pressure and vacuum to monitor fans, blowers, and filters

Water Detector Sensors

Water Detector Sensors

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

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

Facility and Grounds Maintenance

Faucet Timers

Count down to encourage effective handwashing that helps prevent the spread of illness

Heating, Ventilation, and Air Conditioning

HVAC Flame Detectors

HVAC Flame Detectors

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

Thermostats

Connect to heaters, fans, and air conditioners to control the temperature

Air Filters

Trap dust and debris in HVAC, exhaust, and electronics systems to improve efficiency and air quality

Building and Machinery Hardware

Push Bars

Open doors with a push; often found on emergency exits

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)