McMaster-Carr

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	Voltage Voltage

8V AC

12V AC

24V AC

30 to 120V AC

120V AC

240V AC

1 to 28V DC

3 to 15V DC

4 to 28V DC

5 to 28V DC

6V DC

6 to 28V DC

9 to 15V DC

12V DC

15 to 27V DC

24V DC

	Audible Signal Type Audible Signal Type


Buzzer	Bell

Chime

	Mount Type Mount Type

Screw

Panel

	Signal Type Signal Type

Audible Alarm

Signal Light with Audible
Alarm

	Sound Pattern Sound Pattern

Continuous

Pulse

	Volume Volume

	Power Source Power Source

Electric

Mechanical

	Electrical Connection Type Electrical Connection Type

	Current Current

	Volume Control Volume Control

Fixed

Adjustable

	Diameter Diameter

	Material Material

Steel

Plastic

	Number of Wire Leads Number of Wire Leads

	Number of Mounting Holes Number of Mounting Holes

	Mounting Hole Diameter Mounting Hole Diameter

	Depth Depth

	Width Width

5/8"

1 1/8"

	Sensor Type Sensor Type

Light Beam

Magnetic Contact

	Fasteners Included Fasteners Included

Yes

	Height Height

	Bell Diameter Bell Diameter

2 1/2"

	Mounting Hole Thread Size Mounting Hole Thread Size

6-32

8-32

	For Panel Cutout Diameter For Panel Cutout Diameter

3/4"

1 1/8"

1 1/4"

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36 Products

About Sound Levels

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

											Mounting Holes
Style	Voltage	Current	Volume	Sound Pattern	Dia.	Ht.	Wd.	Dp.	Material	Fasteners Included	No. of	Dia.	Thread Size	Includes		Each
With Lug Terminals
A	12V AC	0.5 A @ 12 V AC	65 dB @ 10 ft.	Continuous	__	1 3/8"	1"	7/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	00000
A	24V AC	0.25 A @ 24 V AC	65 dB @ 10 ft.	Continuous	__	1 3/8"	1"	7/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	0000
A	120V AC	0.052 A @ 120 V AC	65 dB @ 10 ft.	Continuous	__	1 3/8"	1"	7/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	0000
A	120V AC	0.11 A @ 120 V AC	76 dB @ 10 ft.	Continuous	__	2 3/8"	1"	1 1/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	0000
A	240V AC	0.026 A @ 240 V AC	65 dB @ 10 ft.	Continuous	__	1 3/8"	1"	7/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	0000
A	240V AC	0.06 A @ 240 V AC	76 dB @ 10 ft.	Continuous	__	2 3/8"	1"	1 1/8"	Plastic	Yes	1	__	6-32	Mounting Bracket	00000000	00000
With 2 Wire Leads
B	3-15V DC	0.01 A @ 12 V DC	71 dB @ 10 ft.	Continuous	__	1 3/4"	1 1/8"	7/8"	Plastic	No	2	0.14"	__	__	00000000	0000
C	9-15V DC	0.025 A @ 12 V DC	55 dB @ 10 ft.	Continuous	__	1 1/4"	5/8"	5/8"	Plastic	No	2	0.1"	__	__	00000000	0000
C	15-27V DC	0.03 A @ 24 V DC	55 dB @ 10 ft.	Continuous	__	1 1/4"	5/8"	5/8"	Plastic	No	2	0.1"	__	__	00000000	0000
D	24V AC	0.2 A @ 24 V AC	86 dB @ 10 ft.	Continuous	2 1/8"	__	__	1 1/4"	Steel	No	1	__	8-32	Mounting Bracket	0000000	00000
D	120V AC	0.04 A @ 120 V AC	86 dB @ 10 ft.	Continuous	2 1/8"	__	__	1 1/4"	Steel	No	1	__	8-32	Mounting Bracket	0000000	00000
With 1 Wire Leads
D	12V DC	0.07 A @ 12 V DC	86 dB @ 10 ft.	Continuous	2 1/8"	__	__	1 1/4"	Steel	No	1	__	8-32	Mounting Bracket	0000000	00000

Panel-Mount Miniature Buzzers

Styles A and C are also known as piezo buzzers.

For Styles B and C, the volume increases as voltage increases.

Buzzers with a pulse tone alternate on/off to draw greater attention than buzzers with a continuous tone.

The buzzer with both a continuous and pulse tone can be wired to trigger two alerts, each corresponding to a different warning. If the continuous and pulse tone are both triggered at the same time, only the continuous tone will sound.

										Mounting Holes
Style	Voltage	Current	Volume	Sound Pattern	For Panel Cutout Dia.	Dia.	Dp.	Material	Fasteners Included	No. of	Dia.	Specifications Met		Each
With Screw Terminals
A	1-28V DC	0.015 A @ 24 V DC	78 dB @ 10 ft.	Continuous	1 1/8"	1 3/4"	1 3/4"	Plastic	__	__	__	__	00000000	000000
A	4-28V DC	0.022 A @ 24 V DC	60 dB @ 10 ft.	Pulse	1 1/8"	1 3/4"	1 3/4"	Plastic	__	__	__	__	00000000	00000
A	30-120V AC	0.03 A @ 120 V AC	71 dB @ 10 ft.	Continuous	1 1/8"	1 3/4"	2 3/8"	Plastic	__	__	__	__	00000000	00000
B	6-28V DC	0.018 A @ 24 V DC 0.01 A @ 12 V DC	53-71 dB @ 10 ft.	Continuous	1 1/8"	1 1/2"	1 3/4"	Plastic	__	__	__	__	0000000	00000
B	6-28V DC	0.018 A @ 24 V DC 0.01 A @ 12 V DC	53-71 dB @ 10 ft.	Pulse	1 1/8"	1 1/2"	1 3/4"	Plastic	__	__	__	__	0000000	00000
With 2 Wire Leads
C	5-28V DC	0.02 A @ 24 V DC	48-80 dB @ 10 ft.	Continuous	3/4"	1"	3/4"	Plastic	No	2	0.13"	UL Recognized	0000000	00000
C	5-28V DC	0.02 A @ 24 V DC	62-84 dB @ 10 ft.	Continuous	1 1/4"	1 1/2"	1"	Plastic	No	2	0.13"	__	0000000	00000
With 3 Wire Leads
C	5-28V DC	0.02 A @ 24 V DC	62-84 dB @ 10 ft.	Continuous, Pulse	1 1/4"	1 1/2"	1"	Plastic	No	2	0.13"	__	0000000	00000

Surface-Mount Buzzers

Surface mount using an outlet box (sold separately).

With Screw Terminals
Voltage	Current	Volume	Sound Pattern	Dia.	Dp.	Material	Fasteners Included	Includes	Specifications Met		Each
24V AC	0.25 A @ 24 V AC	70 dB @ 10 ft.	Continuous	5 1/8"	2 1/4"	Epoxy-Coated Steel	Yes	Mounting Plate	FM Approved, UL Listed	000000000	0000000
24V DC	0.15 A @ 24 V DC	62 dB @ 10 ft.	Continuous	5 1/8"	2 1/4"	Epoxy-Coated Steel	Yes	Mounting Plate	__	00000000	000000
120V AC	0.05 A @ 120 V AC	70 dB @ 10 ft.	Continuous	5 1/8"	2 1/4"	Epoxy-Coated Steel	Yes	Mounting Plate	FM Approved, UL Listed	000000000	000000

Outlet Box

00000000

Each

00000

Magnetic-Contact Door Chimes

No electricity or batteries are needed—as your door opens, the magnet and contact disc are separated, sounding a mechanical chime. The chime can be deactivated.

O'all					Volume
Wd.	Ht.	Dp.	Material	Color	Control	@ Distance	For Use Outdoors	Mount Type	Mount. Fasteners Included		Each
5 3/4"	2"	2 3/4"	Plastic	Brown	Fixed	88 dB @ 10 ft.	No	Surface	Yes	0000000	000000

Motion-Sensing Door Chimes

A chime announces when someone passes through the infrared light beam and a counter keeps track of each entrance and exit. Mount the transmitter and beam reflector between 2 and 20 feet apart. The chime's volume is adjustable up to 85 dB.

Additional chimes (sold separately) can be added to the transmitter.

Chime			Transmitter			Beam Reflector
Wd.	Ht.	Dp.	Wd.	Ht.	Dp.	Wd.	Ht.	Material	Color	Volume @ Distance	For Use Outdoors	Electrical Connection	Includes	Mount Type	Mount. Fasteners Included		Each
3 3/4"	5"	1 1/2"	5"	2 3/4"	2 1/2"	4"	2"	Plastic	White	85 dB @ 10 ft.	No	Two-Prong Plug	26-ft. of 24 Gauge Wire, Beam Reflector, Chime, Plug-In Transformer, Transmitter	Surface	Yes	00000000	0000000

Additional Chime

00000000

Each

000000

Hammer Top Bells

These make great doorbells when used with a push button.

								Mounting Holes
Voltage	Current	Volume	Sound Pattern	Bell Dia.	Ht.	Material	Fasteners Included	No. of	Dia.		Each
With Screw Terminals
6V DC, 8V AC	0.8 A @ 6 V DC, 1 A @ 8 V AC	74 dB @ 10 ft. 54 dB @ 100 ft.	Continuous	6"	10 5/8"	Steel	No	3	1/4"	00000000	000000
6V DC, 8V AC	1 A @ 6 V DC, 1 A @ 8 V AC	78 dB @ 10 ft. 58 dB @ 100 ft.	Continuous	2 1/2"	5 3/4"	Steel	No	2	3/16"	00000000	00000
6V DC, 8V AC	1 A @ 6 V DC, 1 A @ 8 V AC	78 dB @ 10 ft. 58 dB @ 100 ft.	Continuous	4"	6 7/8"	Steel	No	2	3/16"	00000000	00000
24V AC	0.2 A @ 24 V AC	68 dB @ 10 ft. 48 dB @ 100 ft.	Continuous	4"	7 3/8"	Steel	No	3	1/4"	00000000	00000
24V AC	0.2 A @ 24 V AC	74 dB @ 10 ft. 54 dB @ 100 ft.	Continuous	6"	10 5/8"	Steel	No	3	1/4"	00000000	00000

Transformer	00000000	Each	000000
Indoor Push Button	00000000	Each	0000

Miniature Flashing Lights with Buzzer

Volume increases as voltage increases.

The light with a pulse tone alternates on/off to draw greater attention than the light with a continuous tone.

With Screw Terminals
Voltage	Current	Volume	Sound Pattern	For Panel Cutout Dia.	Dia.	Dp.	Material	Light Color	Fasteners Included		Each
6-28V DC	0.016 A @ 12 V DC 0.03 A @ 24 V DC	53-71 dB @ 10 ft.	Continuous	1 1/8"	1 1/2"	1 3/4"	Plastic	Red	No	0000000	000000
6-28V DC	0.016 A @ 12 V DC 0.03 A @ 24 V DC	53-71 dB @ 10 ft.	Pulse	1 1/8"	1 1/2"	1 3/4"	Plastic	Red	No	0000000	00000

Terms and Conditions and Privacy Policy

About Sound Levels

Surface-Mount Miniature Buzzers

Panel-Mount Miniature Buzzers

Surface-Mount Buzzers

Magnetic-Contact Door Chimes

Motion-Sensing Door Chimes

Hammer Top Bells

Miniature Flashing Lights with Buzzer