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
RBE-4.000-3215-NS1 $3.03	Raltron Electronics	32mm OD x 15mm Buzzer	Tray		Panel Mount, Flange	-	-20°C ~ 70°C
RDT-4.000-1206-NS1 $0.66	Raltron Electronics	12.6 OD x 6mm Piezo Transducer	Tray		Through Hole	RDT	-20°C ~ 85°C
RDT-4.000-1212-NS1 $0.88	Raltron Electronics	BUZZER PIEZO 3V 12X12MM SMD	Tape & Reel (TR),Cut Tape (CT)		Surface Mount	RDT	-40°C ~ 105°C
RDT-4.000-1375-NS1 $0.94	Raltron Electronics	13mm OD x 7.5mm Piezo Transducer	Tray		Through Hole	RDT	-40°C ~ 85°C
RDT-4.000-1375-NS2 $0.94	Raltron Electronics	13.8mm OD x 7.5mm Transducer	Tray		Through Hole	RDT	-40°C ~ 85°C
RDT-4.000-1616-NS1 $1.05	Raltron Electronics	BUZZER PIEZO 3V16X16MM SMD	Tape & Reel (TR),Cut Tape (CT)		Surface Mount	RDT	-40°C ~ 105°C
RDT-4.000-2272-NS1 $0.64	Raltron Electronics	22mm OD x 7.2mm Piezo Transducer	Tray		Through Hole	RDT	-40°C ~ 85°C
RDT-4.000-2272-NS2 $0.64	Raltron Electronics	7.2mm Piezo Transducer	Tray		Through Hole	RDT	-40°C ~ 85°C