Alarms, Buzzers, and Sirens

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Driver Circuitry	Input Type	Voltage - Rated	Voltage Range	Frequency	Technology	Operating Mode	Duration	Sound Pressure Level (SPL)	Current - Supply	Port Location	Operating Temperature	Approval Agency	Ratings	Mounting Type	Termination	Size / Dimension	Height - Seated (Max)

EFB-RD24C411 BUZZER PIEZO 15V 24MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	30V (Max)	4kHz	Piezo	Single Tone	-	85dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.945" Dia (24.00mm)	0.315" (8.00mm)
EFB-RL20C102 BUZZER PIEZO 12V 30MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	12 V	-	2kHz	Piezo (with Feedback)	Single Tone	-	85dB @ 12V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	1.181" Dia (30.00mm)	0.472" (12.00mm)
EFB-RM38C123 BUZZER PIEZO 10V 24MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	10 V	-	3.5kHz	Piezo (with Feedback)	Single Tone	-	90dB @ 10V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.945" Dia (24.00mm)	0.433" (11.00mm)
EFB-RD24C41B BUZZER PIEZO 15V 24MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	30V (Max)	4kHz	Piezo	Single Tone	-	85dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.945" Dia (24.00mm)	0.354" (9.00mm)
EFB-RD22C415 BUZZER PIEZO 15V 22MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	30V (Max)	4kHz	Piezo	Single Tone	-	98dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.866" Dia (22.00mm)	0.413" (10.50mm)
EFB-RD22C413 BUZZER PIEZO 15V 22MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	30V (Max)	4kHz	Piezo	Single Tone	-	80dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.866" Dia (22.00mm)	0.256" (6.50mm)
EFB-RD22C41 BUZZER PIEZO 15V 22MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	30V (Max)	4kHz	Piezo	Single Tone	-	85dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.866" Dia (22.00mm)	0.374" (9.50mm)
EFB-AA40D102 BUZZER PIEZO 15V 17MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	25V (Max)	4kHz	Piezo	Single Tone	-	86dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.669" Dia (17.00mm)	0.315" (8.00mm)
EFB-AA14D001 BUZZER PIEZO 15V 14MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	15 V	25V (Max)	4kHz	Piezo	Single Tone	-	74dB @ 15V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.551" Dia (14.00mm)	0.276" (7.00mm)
EFB-RM38C13 BUZZER PIEZO 10V 24MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	10 V	-	3.5kHz	Piezo (with Feedback)	Single Tone	-	90dB @ 10V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	0.945" Dia (24.00mm)	0.433" (11.00mm)
EFB-RC24C41 BUZZER PIEZO 10V 24MM FLANGE Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	Peak-Peak Signal	10 V	30V (Max)	4kHz	Piezo	Single Tone	-	85dB @ 10V, 10cm	-	Top	-10°C ~ 60°C	-	-	Panel Mount, Flange	Wire Leads	0.945" Dia (24.00mm)	0.189" (4.80mm)
EFB-RL28C11 BUZZER PIEZO 12V 30MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	12 V	-	2.8kHz	Piezo (with Feedback)	Single Tone	-	98dB @ 12V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	1.181" Dia (30.00mm)	0.472" (12.00mm)
EFB-RL37C20 BUZZER PIEZO 12V 30MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	12 V	-	3.9kHz	Piezo (with Feedback)	Single Tone	-	100dB @ 12V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	1.181" Dia (30.00mm)	0.394" (10.00mm)
EFB-RL37C22 BUZZER PIEZO 12V 30MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	12 V	-	3.7kHz	Piezo (with Feedback)	Single Tone	-	80dB @ 12V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	1.181" Dia (30.00mm)	0.394" (10.00mm)
EFB-BD32B21 BUZZER PIEZO 12V 39MM TH Panasonic Electronic Components	0 In Stock	Obsolete	EFB	Bulk	Obsolete	Transducer, Externally Driven	DC	12 V	-	3.2kHz	Piezo (with Feedback)	Single Tone	-	106dB @ 12V, 10cm	-	Top	-10°C ~ 60°C	-	-	Through Hole	PC Pins	1.535" Dia (39.00mm)	0.630" (16.00mm)

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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.