Sounder

Buzzers, indicators, alarms, sirens

EFM-320BL

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	105			Measured 105 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			35
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		lead wire

EFM-320D

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous or Pulse
Sound Pressure Level dB at 30cm	105			Measured 105 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			35
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		lead wire

EFM-320P

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Pulse
Sound Pressure Level dB at 30cm	92			Measured 92 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			20
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		lead wire

EFM-320S

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	105			Measured 105 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			35
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		lead wire

EFM-320SS

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		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	24	28	DC voltage
Current mA			35
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		lead wire

EFM-321S

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	105			Measured 105 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	16	DC voltage
Current mA			35
Temperature ºC	-20		70
Width mm		45		Case:Fire-resistance ABS/White
Height mm		26
Weight g		22
Termination		pin		Pin separation: 17.00mm

EFM-390B

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	80.5			Measured 90 dB at 12V-DC & 10cm
Frequency kHz	3.3	3.8	4.3	Rated frequency ±0.5
Voltage V	3	12	20	DC
Current mA			12	12V DC
Temperature ºC	-20		70
Width mm		24
Height mm		11
Termination		pin

EFM-471AL

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		3.7		Rated frequency ± 0.5 kHz
Voltage V	18	24	30	DC voltage
Current mA			20
Temperature ºC	-20		70
Width mm		32		Case:ABS/White
Height mm		15
Weight g		8.4
Termination		lead wire

EFM-471BL

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		3.5		Rated frequency ± 0.5 kHz
Voltage V	1.5	6	16	DC voltage
Current mA			4
Temperature ºC	-20		70
Width mm		32		Case:PC/Black
Height mm		14.3
Weight g		8.4
Termination		lead wire

EFM-471L

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		3.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	24	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

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