Hazard Indicator Alarms | McMaster-Carr

	Voltage Voltage

	Volume Volume

0-88 dB @ 10 ft.

0-110 dB @ 10 ft.

0-72 dB @ 100 ft.

0-90 dB @ 100 ft.

82-102 dB @ 4 ft.

48-80 dB @ 10 ft.

53-71 dB @ 10 ft.

62-84 dB @ 10 ft.

64-113 dB @ 10 ft.

73-85 dB @ 10 ft.

75-88 dB @ 10 ft.

76-94 dB @ 10 ft.

78-101 dB @ 10 ft.

78-103 dB @ 10 ft.

94-100 dB @ 10 ft.

95-110 dB @ 10 ft.

100 dB @ 10 ft.

105 dB @ 10 ft.

106 dB @ 10 ft.

107-111 dB @ 10 ft.

108 dB @ 10 ft.

112 dB @ 10 ft.

113 dB @ 10 ft.

116 dB @ 10 ft.

118 dB @ 10 ft.

120 dB @ 10 ft.

123 dB @ 10 ft.

125 dB @ 10 ft.

126 dB @ 10 ft.

133 dB @ 10 ft.

136 dB @ 10 ft.

86-90 @ 100 ft.

48 dB @ 100 ft.

54 dB @ 100 ft.

55-89 dB @ 100 ft.

58 dB @ 100 ft.

58-83 dB @ 100 ft.

62-81 dB @ 100 ft.

64-80 dB @ 100 ft.

70 dB @ 100 ft.

72 dB @ 100 ft.

74 dB @ 100 ft.

74-80 dB @ 100 ft.

76 dB @ 100 ft.

79 dB @ 100 ft.

80 dB @ 100 ft.

81 dB @ 100 ft.

83 dB @ 100 ft.

85 dB @ 100 ft.

85-89 dB @ 100 ft.

86 dB @ 100 ft.

87 dB @ 100 ft.

88 dB @ 100 ft.

89 dB @ 100 ft.

92 dB @ 100 ft.

96 dB @ 100 ft.

100 dB @ 100 ft.

103 dB @ 100 ft.

105 dB @ 100 ft.

106 dB @ 100 ft.

113 dB @ 100 ft.

	Audible Signal Type Audible Signal Type

	Signal Type Signal Type

Signal Light with Audible
Alarm

	Current Current

0.6 A @ 12 V AC

0.8 A @ 12 V AC

0.01 A @ 12 V DC

0.016 A @ 12 V DC

0.02 A @ 12 V DC

0.025 A @ 12 V DC

0.06 A @ 12 V DC

0.07 A @ 12 V DC

0.18 A @ 12 V DC

0.43 A @ 12 V DC

0.45 A @ 12 V DC

0.56 A @ 12 V DC

0.67 A @ 12 V DC

0.2 A @ 24 V AC

0.22 A @ 24 V AC

0.25 A @ 24 V AC

0.35 A @ 24 V AC

0.4 A @ 24 V AC

0.6 A @ 24 V AC

0.63 A @ 24 V AC

0.9 A @ 24 V AC

1.1 A @ 24 V AC

0.015 A @ 24 V DC

0.018 A @ 24 V DC

0.02 A @ 24 V DC

0.022 A @ 24 V DC

0.03 A @ 24 V DC

0.04 A @ 24 V DC

0.07 A @ 24 V DC

0.11 A @ 24 V DC

0.15 A @ 24 V DC

0.16 A @ 24 V DC

0.19 A @ 24 V DC

0.2 A @ 24 V DC

0.22 A @ 24 V DC

0.33 A @ 24 V DC

0.6 A @ 24 V DC

1.1 A @ 24 V DC

0.02 A @ 28 V DC

0.03 A @ 110 V AC

0.02 A @ 120 V AC

0.03 A @ 120 V AC

0.04 A @ 120 V AC

0.05 A @ 120 V AC

0.09 A @ 120 V AC

0.1 A @ 120 V AC

0.12 A @ 120 V AC

0.13 A @ 120 V AC

0.18 A @ 120 V AC

0.21 A @ 120 V AC

0.3 A @ 120 V AC

0.31 A @ 120 V AC

0.6 A @ 120 V AC

0.75 A @ 120 V AC

2.5 A @ 120 V AC

10 A @ 120 V AC

0.2 A @ 120 V DC

2.5 A @ 120 V DC

0.01 A @ 240 V AC

0.03 A @ 240 V AC

0.05 A @ 240 V AC

0.12 A @ 240 V AC

0.2 A @ 240 V AC

0.6 A @ 240 V AC

1.7 A @ 240 V AC

0.1 A @ 240 V DC

1.7 A @ 240 V DC

	Sound Pattern Sound Pattern

	Power Source Power Source

	Volume Control Volume Control

	Mount Type Mount Type

	Environment Environment

	Electrical Connection Type Electrical Connection Type

Screw Terminals

	Material Material

Brass/Bronze/Stainless Steel

Stainless Steel

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Diameter Diameter

	Depth Depth

	Fasteners Included Fasteners Included

	Number of Wire Leads Number of Wire Leads

	Environmental Rating Environmental Rating

NEC Class I Division 2
Groups A, B, C, D

NEC Class I Divisions 1, 2
Groups B, C, D

NEC Class II Division 2
Groups F, G

NEC Class II Divisions 1, 2
Groups E, F, G

NEC Class III Division 2

NEC Class III Divisions
1, 2

	Specifications Met Specifications Met

	Light Color Light Color

	Red		Amber
	White		Blue

	Height Height

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant with
Exemptions

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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219 Products

About Sound Levels

To choose an alarm or speaker that’s loud enough, first determine the decibel (dB) rating of background noise.

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Long-Distance Audible Alarms

Washdown Buzzers

Washdown Buzzers

Buzzers meet NEMA 4X for protection and corrosion resistance in washdown environments.

Buzzers

Buzzers

Hazardous Location Buzzers

Hazardous Location Buzzers

Buzzers are UL listed for use in environments where flammable gases, combustible dust, and combustible fibers may be present.

Multiple-Tone Buzzers

Multiple-Tone Buzzers

Multiple-Tone Sirens

Multiple-Tone Sirens

Sirens can emit both continuous and pulse tones—pulse tones alternate on/off to draw greater attention than continuous tones.

Motor-Driven Sirens

The built-in motor-driven fan in these sirens generates a shrill tone that's audible over long distances.

Sirens

Sirens

Adjustable-Volume Multiple-Tone Horns

Adjustable-Volume Multiple-Tone Horns

Multiple-Tone Horns

Multiple-Tone Horns

Dual Trumpet-Style Horns

Trumpet-Style Horns

Hazardous Location Multiple-Tone Horns

Hazardous Location Multiple-Tone Horns

Horns are UL and C-UL listed for indoor and outdoor use in Class I, Division 2, Groups A, B, C, and D; Class II, Division 2, Groups F and G; and Class III, Division 2 hazardous locations.

Bells

Bells

Hammer Top Bells

These make great doorbells when used with a push button.

Long-Distance Whistles

Apply air or steam pressure to produce a shrill tone and alert workers. Signal continues as long as pressure is applied.

Long-Distance Whistles with Valve

The quick-opening valve on these whistles allows manual operation—pull the valve while air or steam pressure is being applied to produce a shrill tone and alert workers.

Disposable Air Horns

Toss these pocket-size air horns when they run out of air.

Air Horns

Air Horns

These horns have disposable canisters that can be replaced when the propellant is gone.

Rechargeable Air Horns

Rechargeable Air Horns

When this horn runs out of air, recharge it with the included pump.

Close-Proximity Audible Alarms

Panel-Mount Miniature Buzzers

Panel-Mount Miniature Buzzers

Surface-Mount Miniature Buzzers

Surface-Mount Miniature Buzzers

Surface-Mount Buzzers

Surface-Mount Buzzers

Electronic Whistles

These whistles operate with the press of a button instead of your mouth, allowing multiple people to use them while lowering the risk of spreading germs.

Whistles

Vehicle Alert Bells

Just like the bells you hear at service stations, these bells ring when a vehicle drives over the attached hose.

Signal Lights with Audible Alarm

Flashing Lights with Bell

Flashing Lights with Bell

Miniature Flashing Lights with Buzzer

Miniature Flashing Lights with Buzzer

Strobe Lights with Siren

Strobe Lights with Siren

Lift Truck Horns

Lift Truck Backup Alarms

Lift Truck Backup Alarms

These alarms beep loudly and repeatedly when a vehicle moves in reverse.

Extra-Loud Lift Truck Horns

Extra-Loud Lift Truck Horns

This horn has a built-in compressor, similar to that in a car horn, for a louder sound than other lift truck horns.

Lift Truck Horns for Outdoor Use

Lift Truck Horns for Outdoor Use

With no moving parts as well as sealed electronic components, this horn is built to last even in wet conditions.

Lift Truck Horns

Lift Truck Horns

These horns produce a sound loud enough to be heard in industrial settings.

Lift Truck Motion Bells

Lift Truck Motion Bells

Indicate forward or reverse motion with these bells. They mount directly to a vehicle's wheel hub, without switches or wires.

Fire Alarms

Fire Alarms with Strobe Light

Fire Alarms with Strobe Light

In addition to an audible signal, these alarms flash a high-intensity strobe to draw attention during fire emergencies.

Fire Alarms

Fire Alarms

Fire Alarm Bells

Fire Alarm Bells

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