Buzzers & Audio Indicators - Board Mount

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MSR205 Piezoelectric Indicators

Mallory Sonalert MSR Series is a Piezoelectric Indicator, with DC voltage, housed in a ø23mm x 11mm blue round housing with PC Pins. Features include loud continuous or pulse sound levels ranging from 75dBa to 96dBa and a 3.4kHz to 3.9kHz frequency range with gullwing lead or solder pin terminations. Options include board mount or flush mount and sealed (wash label included) versions are also available.

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Results: 15

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Part #

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NR
Mallory Sonalert
1: $14.21
2,041In Stock

Mfr. Part No.
MSR205NR

Mouser Part No
539-MSR205NR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

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Datasheet

2,041In Stock

$14.21

$11.59

$10.39

$9.59

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Min.: 1
Mult.: 1

Indicators

Piezoelectric

85 dBA

Continuous

3.9 kHz

3 VDC

10 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NJSR
Mallory Sonalert
1: $17.42
30In Stock

Mfr. Part No.
MSR205NJSR

Mouser Part No
539-MSR205NJSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

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Datasheet

30In Stock

$17.42

$14.21

$12.87

$11.71

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Min.: 1
Mult.: 1

Indicators

Piezoelectric

85 dBA

Pulse

3.9 kHz

3 VDC

10 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC XLOUD, SEALED

MSR516NPSR
Mallory Sonalert
1: $14.32
2In Stock

Mfr. Part No.
MSR516NPSR

Mouser Part No
539-MSR516NPSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC XLOUD, SEALED

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Datasheet

2In Stock

$14.32

$13.97

$13.06

$12.63

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

86 dBA

Pulse

3.9 kHz

16 VDC

12 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC XLOUD, 23X10MM

MSR516NR
Mallory Sonalert
1: $11.29
8,105In Stock

Mfr. Part No.
MSR516NR

Mouser Part No
539-MSR516NR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC XLOUD, 23X10MM

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Datasheet

8,105In Stock

$11.29

$9.89

$9.04

$8.43

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

96 dBA

Continuous

3.9 kHz

16 VDC

14 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC MEDIUM, 23X10MM

MSR320R
Mallory Sonalert
1: $11.70
1,086In Stock
260On Order

Mfr. Part No.
MSR320R

Mouser Part No
539-MSR320R

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC MEDIUM, 23X10MM

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Datasheet

1,086In Stock

260On Order

$11.70

$9.37

$8.47

$7.87

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Min.: 1
Mult.: 1

Indicators

Piezoelectric

75 dBA

Continuous

3.8 kHz

20 VDC

16 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC LOUD, 23X10MM, PINS

MSR516NJR
Mallory Sonalert
1: $14.28
267In Stock

Mfr. Part No.
MSR516NJR

Mouser Part No
539-MSR516NJR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC LOUD, 23X10MM, PINS

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Datasheet

267In Stock

$14.28

$14.09

$10.15

$9.42

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

96 dBA

Pulse

3.9 kHz

16 VDC

12 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC LOUD, SEALED, PINS

MSR516NSR
Mallory Sonalert
1: $12.69
585In Stock

Mfr. Part No.
MSR516NSR

Mouser Part No
539-MSR516NSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC LOUD, SEALED, PINS

Learn More

Datasheet

585In Stock

$12.69

$10.32

$9.22

$8.54

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

96 dBA

Continuous

3.9 kHz

16 VDC

14 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NPR
Mallory Sonalert
1: $17.79
16In Stock

Mfr. Part No.
MSR205NPR

Mouser Part No
539-MSR205NPR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

Learn More

Datasheet

16In Stock

$17.79

$13.72

$12.17

$11.30

View

Min.: 1
Mult.: 1

Buzzers

85 dBA

Pulse

3.9 kHz

3 V

10 mA

Solder Pin

Board Mount

23 mm

23 mm L x 23 mm W x 11 mm H

Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC SEALED, 23X10MM

MSR320SR
Mallory Sonalert
1: $12.00
91In Stock
1,000Expected 19/8/2026

Mfr. Part No.
MSR320SR

Mouser Part No
539-MSR320SR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC SEALED, 23X10MM

Learn More

Datasheet

91In Stock

1,000Expected 19/8/2026

$12.00

$9.38

$8.49

$7.87

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

86 dBA

Continuous

3.8 kHz

20 VDC

16 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount CONSTANT, 4-10VDC LOUD, 23X10MM, PINS

MSR414NR
Mallory Sonalert
1: $13.38
45In Stock

Mfr. Part No.
MSR414NR

Mouser Part No
539-MSR414NR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount CONSTANT, 4-10VDC LOUD, 23X10MM, PINS

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Datasheet

45In Stock

$13.38

$10.36

$9.78

$8.89

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

86 dBA

Continuous

3.9 kHz

10 VDC

12 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NPSR
Mallory Sonalert
1: $18.03
15Expected 12/8/2026

Mfr. Part No.
MSR205NPSR

Mouser Part No
539-MSR205NPSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

Learn More

Datasheet

15Expected 12/8/2026

$18.03

$17.63

$16.76

$16.09

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Min.: 1
Mult.: 1

Buzzers

85 dBA

Pulse

3.9 kHz

3 V

10 mA

Solder Pin

Board Mount

23 mm

23 mm L x 23 mm W x 11 mm H

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NJR
Mallory Sonalert
1: $16.99
Lead-Time 4 Weeks

Mfr. Part No.
MSR205NJR

Mouser Part No
539-MSR205NJR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

Learn More

Datasheet

Lead-Time 4 Weeks

$16.99

$13.44

$12.17

$11.30

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

85 dBA

Pulse

3.9 kHz

3 VDC

10 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount Low Voltage

MSR205NSR
Mallory Sonalert
1: $16.88
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
MSR205NSR

Mouser Part No
539-MSR205NSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount Low Voltage

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

$16.88

$12.99

$11.76

$10.93

View

Min.: 1
Mult.: 1

Indicators

Piezoelectric

85 dBA

Continuous

3.9 kHz

3 VDC

10 mA

Solder Pin

Through Hole

23 mm

23 mm x 23 mm x 11 mm

Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC XLOUD, SEALED

MSR516NJSR
Mallory Sonalert
1: $14.65
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
MSR516NJSR

Mouser Part No
539-MSR516NJSR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC XLOUD, SEALED

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

$14.65

$14.31

$13.41

$13.00

View

Min.: 1
Mult.: 1

Buzzers

90 dBA

Pulse

16 V

12 mA

Gullwing Lead

23 mm

23 mm L x 23 mm W x 11 mm H

Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC LOUD, 23X10MM, PINS

MSR516NPR
Mallory Sonalert
1: $14.46
Non-Stocked Lead-Time 4 Weeks

Mfr. Part No.
MSR516NPR

Mouser Part No
539-MSR516NPR

Mallory Sonalert

Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC LOUD, 23X10MM, PINS

Learn More

Datasheet

Non-Stocked Lead-Time 4 Weeks

$14.46

$14.08

$12.74

$12.36

View

Min.: 1
Mult.: 1

Buzzers

96 dBA

Pulse

3.7 kHz

16 V

12 mA

Solder Pin

Flush Mount

23 mm

23 mm L x 23 mm W x 11 mm H

MSR205 Piezoelectric Indicators

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