Alarms, Buzzers, and Sirens

Alarms, Buzzers, and Sirens are devices that produce an audible signal usually like a steady high-pitched hum that is encased within a molded housing. The characteristics are driver circuitry, input type, voltage rated, voltage range, frequency, technology, operating mode, current supply, and port location. The technology is electromechanical, magnetic, piezo, and piezo (with feedback) with a frequency from multiple, 200Hz to 8kHz.

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Select products	Mfr	Description	Package	Supplier Device Package	Mounting Type	Series	Operating Temperature
PKM33EPH1202C	Murata Electronics	BUZZER PIEZO 30V 33MM TH	Bulk		Through Hole	PiezoRinger®	-20°C ~ 70°C
PKM44EWH1001C	Murata Electronics	BUZZER PIEZO 30V 44MM FLANGE	Bulk		Panel Mount, Flange	PK	-20°C ~ 70°C
PKMCS0909E4000-R1 $0.71	Murata Electronics	BUZZER PIEZO 9X9MM SMD	Tape & Reel (TR),Cut Tape (CT)		Surface Mount	PK	-40°C ~ 85°C
PKMCS0909E48H0-R1 $0.82	Murata Electronics	BUZZER PIEZO 2.5V 9X9MM W SMD	Tape & Reel (TR),Cut Tape (CT)		Surface Mount	PK	-40°C ~ 85°C
PKMCS1818E20A0-R1 $1.84	Murata Electronics	BUZZER PIEZO 12V 18X18MM SMD	Tape & Reel (TR),Cut Tape (CT)		Surface Mount	PK	-40°C ~ 105°C
PL-20A35EWQ $5.17	Mallory Sonalert Products Inc.	BUZZER PIEZO 12V 28MM FLANGE	Bulk		Panel Mount, Flange	PL	-20°C ~ 70°C
PL-21A31PQ $11.02	Mallory Sonalert Products Inc.	BUZZER PIEZO 12V 24MM TH	Bulk		Through Hole	PL	-20°C ~ 70°C
PL-21N30PQ $7.56	Mallory Sonalert Products Inc.	BUZZER PIEZO 12V 24MM TH	Bulk		Through Hole	PL	-20°C ~ 70°C