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
PKM22EPPH4001-B0 $0.49	Murata Electronics	BUZZER PIEZO 1.5V 22MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPPH4002-B0 $0.48	Murata Electronics	BUZZER PIEZO 1.5V 22MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPPH4005-B0 $0.34	Murata Electronics	BUZZER PIEZO 22MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPPH4007-B0 $0.60	Murata Electronics	BUZZER PIEZO 1.5V 22MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPPH4012-B0 $0.52	Murata Electronics	BUZZER PIEZO 1.5V 22MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPTH2001-B0	Murata Electronics	BUZZER PIEZO 3V 22X7MM W TH	Bulk		Through Hole	PK	-20°C ~ 70°C
PKM22EPTH2002-B0	Murata Electronics	BUZZER PIEZO 22X7MM W TH	Bulk		Through Hole	PiezoRinger®	-20°C ~ 70°C
PKM33EPH1201C	Murata Electronics	BUZZER PIEZO 30V 33MM TH	Bulk		Through Hole	PK	-20°C ~ 70°C