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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Sound Pressure Level	Tone	Frequency	Voltage Rating	Current Rating	Termination Style	Mounting Style	Diameter	Dimensions
Buzzers & Audio Indicators - Board Mount Low Voltage MSR205NR Mallory Sonalert 1: S/41.22 2,041In Stock	Mfr. Part # MSR205NR Mouser Part # 539-MSR205NR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	2,041In Stock	S/41.22 S/30.60 S/28.88 S/27.71 View S/26.16 S/24.64 S/23.98 S/23.20	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: S/49.86 20In Stock	Mfr. Part # MSR205NJSR Mouser Part # 539-MSR205NJSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	20In Stock	S/49.86 S/40.68 S/36.04 S/33.51 View S/31.18 S/28.38 S/26.94	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: S/40.99 2In Stock	Mfr. Part # MSR516NPSR Mouser Part # 539-MSR516NPSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC XLOUD, SEALED Learn More about Mallory Sonalert msr indicators	Datasheet	2In Stock	S/40.99 S/37.10 S/34.14 S/32.54 View S/28.88 S/26.59 S/26.04 S/24.80 Quote	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: S/36.78 7,347In Stock	Mfr. Part # MSR516NR Mouser Part # 539-MSR516NR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC XLOUD, 23X10MM Learn More about Mallory Sonalert msr indicators	Datasheet	7,347In Stock	S/36.78 S/28.73 S/26.00 S/24.13 View S/22.42 S/20.40	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: S/34.92 867In Stock 1,885Expected 10/21/2026	Mfr. Part # MSR320R Mouser Part # 539-MSR320R	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC MEDIUM, 23X10MM Learn More about Mallory Sonalert msr indicators	Datasheet	867In Stock 1,885Expected 10/21/2026	S/34.92 S/26.82 S/24.25 S/22.54 View S/20.94 S/19.03 Quote	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 CONSTANT, 3-20VDC SEALED, 23X10MM MSR320SR Mallory Sonalert 1: S/34.76 775In Stock	Mfr. Part # MSR320SR Mouser Part # 539-MSR320SR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount CONSTANT, 3-20VDC SEALED, 23X10MM Learn More about Mallory Sonalert msr indicators	Datasheet	775In Stock	S/34.76 S/27.60 S/24.99 S/23.20 View S/21.56 S/19.62 S/18.29 S/17.83	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: S/38.38 45In Stock	Mfr. Part # MSR414NR Mouser Part # 539-MSR414NR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount CONSTANT, 4-10VDC LOUD, 23X10MM, PINS Learn More about Mallory Sonalert msr indicators	Datasheet	45In Stock	S/38.38 S/29.70 S/27.99 S/25.46 View S/23.67 S/21.53 S/20.09 S/19.77	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 SLOW PULSE, 5-16VDC LOUD, 23X10MM, PINS MSR516NJR Mallory Sonalert 1: S/40.87 170In Stock 320Expected 10/19/2026	Mfr. Part # MSR516NJR Mouser Part # 539-MSR516NJR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC LOUD, 23X10MM, PINS Learn More about Mallory Sonalert msr indicators	Datasheet	170In Stock 320Expected 10/19/2026	S/40.87 S/32.11 S/29.04 S/26.98 View S/24.56 S/22.34 S/20.82 S/20.63	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: S/39.12 384On Order	Mfr. Part # MSR516NSR Mouser Part # 539-MSR516NSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount CONSTANT, 5-16VDC LOUD, SEALED, PINS Learn More about Mallory Sonalert msr indicators	Datasheet	384On Order On Order Ship Dates Mfr. #: MSR516NSR Stock: 0 On Order: 184 Expected 10/28/2026 200 Expected 11/11/2026 Factory Lead-Time: 4 Weeks	S/39.12 S/32.19 S/28.06 S/26.04 View S/24.13 S/22.62 S/21.33 S/20.90	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: S/48.81 28Expected 10/12/2026	Mfr. Part # MSR205NPR Mouser Part # 539-MSR205NPR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	28Expected 10/12/2026	S/48.81 S/39.28 S/34.84 S/32.35 View S/30.09 S/27.40 S/25.89	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: S/48.81 Non-Stocked Lead-Time 4 Weeks	Mfr. Part # MSR205NJR Mouser Part # 539-MSR205NJR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	Non-Stocked Lead-Time 4 Weeks	S/48.81 S/38.46 S/34.84 S/32.35 View S/30.09 S/27.40 S/25.89	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 MSR205NPSR Mallory Sonalert 1: S/53.41 Non-Stocked Lead-Time 4 Weeks	Mfr. Part # MSR205NPSR Mouser Part # 539-MSR205NPSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	Non-Stocked Lead-Time 4 Weeks	S/53.41 S/48.66 S/45.19 S/43.21 View S/37.91 S/33.16 S/32.50	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 MSR205NSR Mallory Sonalert 1: S/48.31 Non-Stocked Lead-Time 4 Weeks	Mfr. Part # MSR205NSR Mouser Part # 539-MSR205NSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount Low Voltage Learn More about Mallory Sonalert msr indicators	Datasheet	Non-Stocked Lead-Time 4 Weeks	S/48.31 S/37.17 S/33.67 S/31.30 View S/29.08 S/26.51 S/24.91	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: S/42.93 Non-Stocked Lead-Time 4 Weeks	Mfr. Part # MSR516NJSR Mouser Part # 539-MSR516NJSR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount SLOW PULSE, 5-16VDC XLOUD, SEALED Learn More about Mallory Sonalert msr indicators	Datasheet	Non-Stocked Lead-Time 4 Weeks	S/42.93 S/39.59 S/36.71 S/35.19 View S/30.95 S/26.20	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: S/43.44 Non-Stocked Lead-Time 4 Weeks	Mfr. Part # MSR516NPR Mouser Part # 539-MSR516NPR	Mallory Sonalert	Buzzers & Audio Indicators - Board Mount FAST PULSE, 5-16VDC LOUD, 23X10MM, PINS Learn More about Mallory Sonalert msr indicators	Datasheet	Non-Stocked Lead-Time 4 Weeks	S/43.44 S/38.54 S/34.95 S/33.01 View S/30.63 S/25.77 S/25.46	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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