Sounder

Buzzers, indicators, alarms, sirens

EFM-471ML

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Pulse
Sound Pressure Level dB at 30cm	87			Measured 87 dB at 30cm
Frequency kHz		3.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		32		Case:ABS/White
Height mm		15
Weight g		8.4
Termination		lead wire

EFM-472

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	90			Measured 90 dB at 30cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	3	5	DC voltage
Current mA			5
Temperature ºC	-20		70
Width mm		30		Case:PC/Black
Height mm		19.6
Weight g		8.9
Termination		pin		Pin separation: 15.00mm

EFM-472A

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	100.46			Measured 90 dB at 100cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			10
Temperature ºC	-20		70
Width mm		30		Case:PC/Black
Height mm		20
Weight g		8.9
Termination		pin		Pin separation: 15.00mm

EFM-472A2

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	100			Measured 100 dB at 30cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			30
Temperature ºC	-20		70
Width mm		30		Case:PC/Black
Height mm		20
Weight g		8.9
Termination		pin		Pin separation: 14.00mm

EFM-472AL

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	100.46			Measured 90 dB at 100cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			10
Temperature ºC	-20		70
Width mm		30.5		Case:PC/Black
Height mm		19.6
Weight g		9.7
Termination		lead wire

EFM-472ML

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Pulse 2-6Hz
Sound Pressure Level dB at 30cm	85			Measured 85 dB at 30cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		30		Case:PC/Black
Height mm		20
Weight g		10.1
Termination		pin

EFM-473

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous + Pulse(2.5Hz±20%)
Sound Pressure Level dB at 30cm	80			Measured 80 dB at 30cm
Frequency kHz		3.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			3
Temperature ºC	-20		70
Width mm		30		Case:PC/Black
Height mm		19.5
Weight g		8.6
Termination		pin		Pin separation: 17.50mm

EFM-475

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	85			Measured 85 dB at 30cm
Frequency kHz		4.5		Rated frequency ± 0.5 kHz
Voltage V	3	12	30	DC voltage
Current mA			3
Temperature ºC	-20		70
Width mm		22		Case:ABS/Black
Height mm		10.8
Weight g		3.5
Termination		lead wire

EFM-620

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	110.46			Measured 100 dB at 100cm
Frequency kHz		3.2		Rated frequency ± 0.5 kHz
Voltage V	7	9	20	DC voltage
Current mA			50
Temperature ºC	-20		60
Width mm		40		Case:ABS/Black
Height mm		20
Weight g		12.5
Termination		pin		Pin separation: 18.00mm

EFM-620A

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: N/A
Sound Pressure Level dB at 30cm	95			Measured 95 dB at 30cm
Frequency kHz		3.2		Rated frequency ± 0.5 kHz
Voltage V	2	3	7	DC voltage
Current mA			30
Temperature ºC	-20		60
Width mm		40		Case:ABS/Black
Height mm		20
Weight g		12.5
Termination		pin		Pin separation: 18.00mm

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