.hide-partial { max-height: none; } .show-more { display: none; }

Continuous Audio Devices

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Audio Devices

List Images

Results: 516

Applied Filters:

Tone = Continuous

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 1900HZ, SOFT

SC628ER
Mallory Sonalert
1: $37.44
14In Stock

Mfr. Part No.
SC628ER

Mouser Part No
539-SC628ER

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 1900HZ, SOFT

Learn More

Datasheet

14In Stock

$37.44

$33.29

$27.81

$25.88

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 2900HZ, SOFT

SC628FR
Mallory Sonalert
1: $31.92
1In Stock

Mfr. Part No.
SC628FR

Mouser Part No
539-SC628FR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 2900HZ, SOFT

Learn More

Datasheet

1In Stock

$31.92

$28.17

$25.55

$23.79

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 4500HZ, CUL APPRVD

SC628HR
Mallory Sonalert
1: $43.04
16In Stock

Mfr. Part No.
SC628HR

Mouser Part No
539-SC628HR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 4500HZ, CUL APPRVD

Learn More

Datasheet

16In Stock

$43.04

$36.05

$30.63

$28.51

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 2900HZ, CUL APPRVD

SC628LR
Mallory Sonalert
1: $42.16
7In Stock

Mfr. Part No.
SC628LR

Mouser Part No
539-SC628LR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 2900HZ, CUL APPRVD

Datasheet

7In Stock

$42.16

$33.43

$30.40

$28.76

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 1900HZ, LOUD

SC628NDR
Mallory Sonalert
1: $46.43
9In Stock
15Expected 28/8/2026

Mfr. Part No.
SC628NDR

Mouser Part No
539-SC628NDR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 6-28VDC 1900HZ, LOUD

Learn More

Datasheet

9In Stock

15Expected 28/8/2026

$46.43

$38.01

$35.29

$32.52

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VAC XLOUD, CUL APPRVD

SC648ANR
Mallory Sonalert
1: $68.92
8In Stock

Mfr. Part No.
SC648ANR

Mouser Part No
539-SC648ANR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VAC XLOUD, CUL APPRVD

Learn More

Datasheet

8In Stock

$68.92

$53.11

$48.43

$46.39

$44.65

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VAC MED, CUL APPRVD

SC648AR
Mallory Sonalert
1: $57.51
10In Stock

Mfr. Part No.
SC648AR

Mouser Part No
539-SC648AR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VAC MED, CUL APPRVD

Learn More

Datasheet

10In Stock

$57.51

$43.56

$40.85

$40.27

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC 1900HZ, CUL APPRVD

SC648DR
Mallory Sonalert
1: $38.28
14In Stock
15Expected 20/8/2026

Mfr. Part No.
SC648DR

Mouser Part No
539-SC648DR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC 1900HZ, CUL APPRVD

Datasheet

14In Stock

15Expected 20/8/2026

$38.28

$30.93

$27.49

$25.51

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC 4500HZ, MEDIUM

SC648HR
Mallory Sonalert
1: $42.04
12In Stock

Mfr. Part No.
SC648HR

Mouser Part No
539-SC648HR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC 4500HZ, MEDIUM

Datasheet

12In Stock

$42.04

$32.61

$29.61

$27.55

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC MED, CUL APPRVD

SC648R
Mallory Sonalert
1: $31.44
42In Stock

Mfr. Part No.
SC648R

Mouser Part No
539-SC648R

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 10-48VDC MED, CUL APPRVD

Learn More

Datasheet

42In Stock

$31.44

$24.34

$22.09

$20.55

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT 6-16VDC, 3KHZ, XLOUD

SCE016XD3CTB
Mallory Sonalert
1: $43.52
8In Stock

Mfr. Part No.
SCE016XD3CTB

Mouser Part No
539-SCE016XD3CTB

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT 6-16VDC, 3KHZ, XLOUD

Learn More

Datasheet

8In Stock

$43.52

$34.80

$32.33

$30.34

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 2KHZ, SOFT

SCE028SD2CT1B
Mallory Sonalert
1: $61.01
1In Stock

Mfr. Part No.
SCE028SD2CT1B

Mouser Part No
539-SCE028SD2CT1B

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 2KHZ, SOFT

Datasheet

1In Stock

$61.01

$55.57

$44.25

$43.55

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 3KHZ, SOFT

SCE028SD3CTB
Mallory Sonalert
1: $37.16
8In Stock

Mfr. Part No.
SCE028SD3CTB

Mouser Part No
539-SCE028SD3CTB

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 3KHZ, SOFT

Datasheet

8In Stock

$37.16

$33.88

$33.24

$31.02

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 3KHZ, XLOD

SCE028XD3CTB
Mallory Sonalert
1: $74.70
27In Stock

Mfr. Part No.
SCE028XD3CTB

Mouser Part No
539-SCE028XD3CTB

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT 16-28VDC, 3KHZ, XLOD

Datasheet

27In Stock

$74.70

$64.52

$59.20

$49.34

$46.92

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT 30-120V, 3KHZ, LOUD

SCE120LA3CTB
Mallory Sonalert
1: $85.98
1In Stock

Mfr. Part No.
SCE120LA3CTB

Mouser Part No
539-SCE120LA3CTB

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT 30-120V, 3KHZ, LOUD

Datasheet

1In Stock

$85.98

$80.27

$78.72

$77.93

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 30-120V LOUD, CLASS I DIV II

SCH110NR
Mallory Sonalert
1: $480.56
2In Stock

Mfr. Part No.
SCH110NR

Mouser Part No
539-SCH110NR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 30-120V LOUD, CLASS I DIV II

Datasheet

2In Stock

$480.56

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial CONSTANT, 4-28VDC SNAP-IN, CUL APPRVD

SNP428R
Mallory Sonalert
1: $31.65
14In Stock
100Expected 10/8/2026

Mfr. Part No.
SNP428R

Mouser Part No
539-SNP428R

Mallory Sonalert

Buzzers & Audio Indicators - Industrial CONSTANT, 4-28VDC SNAP-IN, CUL APPRVD

Learn More

Datasheet

14In Stock

100Expected 10/8/2026

$31.65

$24.51

$22.22

$20.67

$17.78

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial 22MM 6-16DC 65-75DB CONT CUL ROHS STK$

ZA016SDCT
Mallory Sonalert
1: $76.87
2In Stock

Mfr. Part No.
ZA016SDCT

Mouser Part No
539-ZA016SDCT

Mallory Sonalert

Buzzers & Audio Indicators - Industrial 22MM 6-16DC 65-75DB CONT CUL ROHS STK$

Learn More

Datasheet

2In Stock

$76.87

$65.73

$61.87

$59.00

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial 22MM 16-28ACDC 85-95DB CONT CUL ROH STK$

ZA028LACT
Mallory Sonalert
1: $69.99
21In Stock
48Expected 9/9/2026

Mfr. Part No.
ZA028LACT

Mouser Part No
539-ZA028LACT

Mallory Sonalert

Buzzers & Audio Indicators - Industrial 22MM 16-28ACDC 85-95DB CONT CUL ROH STK$

Learn More

Datasheet

21In Stock

48Expected 9/9/2026

$69.99

$54.52

$49.56

$46.19

$43.59

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial 22MM 16-28DC 85-95DB CONT CUL ROHS STK$

ZA028LDCT
Mallory Sonalert
1: $53.20
33In Stock

Mfr. Part No.
ZA028LDCT

Mouser Part No
539-ZA028LDCT

Mallory Sonalert

Buzzers & Audio Indicators - Industrial 22MM 16-28DC 85-95DB CONT CUL ROHS STK$

Learn More

Datasheet

33In Stock

$53.20

$43.03

$39.09

$36.41

View

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial 22MM 16-28DC 75-85DB CONT CUL ROHS STK$

ZA028MDCT
Mallory Sonalert
1: $44.21
11In Stock

Mfr. Part No.
ZA028MDCT

Mouser Part No
539-ZA028MDCT

Mallory Sonalert

Buzzers & Audio Indicators - Industrial 22MM 16-28DC 75-85DB CONT CUL ROHS STK$

Learn More

Datasheet

11In Stock

$44.21

$33.80

$33.40

$32.16

$31.54

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial 22MM 48-120ACDC 75-85DB CON CUL ROH STK$

ZA120MACT
Mallory Sonalert
1: $63.04
20In Stock
61Expected 12/8/2026

Mfr. Part No.
ZA120MACT

Mouser Part No
539-ZA120MACT

Mallory Sonalert

Buzzers & Audio Indicators - Industrial 22MM 48-120ACDC 75-85DB CON CUL ROH STK$

Learn More

Datasheet

20In Stock

61Expected 12/8/2026

$63.04

$51.37

$47.36

$44.12

$41.43

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial Ind Control SoundLED 20-28Vdc 85-95dB RED

ZT028LAIC1R
Mallory Sonalert
1: $175.45
1In Stock

Mfr. Part No.
ZT028LAIC1R

Mouser Part No
539-ZT028LAIC1R

Mallory Sonalert

Buzzers & Audio Indicators - Industrial Ind Control SoundLED 20-28Vdc 85-95dB RED

Learn More

Datasheet

1In Stock

$175.45

$137.22

$125.41

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial ALARM+LED 28 Vdc; Loud; Green; Cont.

ZT028LDCTG
Mallory Sonalert
1: $93.55
7In Stock

Mfr. Part No.
ZT028LDCTG

Mouser Part No
539-ZT028LDCTG

Mallory Sonalert

Buzzers & Audio Indicators - Industrial ALARM+LED 28 Vdc; Loud; Green; Cont.

Learn More

Datasheet

7In Stock

$93.55

$55.69

Min.: 1
Mult.: 1

Buzzers & Audio Indicators - Industrial ALARM+LED 28 Vdc; Loud; Red; Cont.

ZT028LDCTR
Mallory Sonalert
1: $63.13
21In Stock

Mfr. Part No.
ZT028LDCTR

Mouser Part No
539-ZT028LDCTR

Mallory Sonalert

Buzzers & Audio Indicators - Industrial ALARM+LED 28 Vdc; Loud; Red; Cont.

Learn More

Datasheet

21In Stock

$63.13

$49.59

$44.38

$42.19

$40.57

Min.: 1
Mult.: 1

Continuous Audio Devices

Types of Audio Devices

Customer Service Office

Company

Resources

Support