Sounder

Buzzers, indicators, alarms, sirens

EFM-236KL

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Pulse Fast
Sound Pressure Level dB at 30cm	100			Measured 100 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		41.8		Case:ABS/Black
Height mm		16
Weight g		15
Termination		lead wire

EFM-236L

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	12	20	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		41.8		Case:ABS/Black
Height mm		16
Weight g		12.4
Termination		lead wire

EFM-236MFL

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	106.5			Measured 96 dB at 12V-DC & 100cm
Frequency kHz	2.4	2.9	3.4	Rated frequency ±0.5
Voltage V	4	12	28	DC
Current mA			30	12V DC
Temperature ºC	-20		70
Width mm		41.8
Height mm		25.4
Termination		lead wire

EFM-236ML

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Pulse Slow
Sound Pressure Level dB at 30cm	100			Measured 100 dB at 30cm
Frequency kHz		2.9		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		41.8		Case:ABS/Black
Height mm		16
Weight g		15
Termination		lead wire

EFM-240

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		2.8		Rated frequency ± 0.5 kHz
Voltage V	3	12	20	DC voltage
Current mA			15
Temperature ºC	-20		70
Width mm		30.2		Case:ABS/Black
Height mm		14.5
Weight g		6.7
Termination		pin		Pin separation: 17.50mm

EFM-250

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	75.46			Measured 85 dB at 10cm
Frequency kHz		4		Rated frequency ± 0.5 kHz
Voltage V	6	12	16	DC voltage
Current mA			8
Temperature ºC	-20		60
Width mm		14.1		Case:PC/Black
Height mm		8
Weight g		1.3
Termination		pin		Pin separation: 7.60mm

EFM-250D

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		External Driven		Tone: Square Wave
Sound Pressure Level dB at 30cm	70.46			Measured 80 dB at 10cm
Frequency kHz		4.1		Rated frequency ± 0.5 kHz
Voltage V		5		peak to peak voltage of square wave
Peak voltage allowed V			20
Current mA			2
Input Capacitance nF		10		± 30% measured at 120 Hz
Temperature ºC	-30		80
Width mm		14		Case:PA6/Black
Height mm		7.5
Weight g		1
Termination		pin

EFM-250D10

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		External Driven		Tone: Square Wave
Sound Pressure Level dB at 30cm	70.46			Measured 80 dB at 10cm
Frequency kHz		4.1		Rated frequency ± 0.5 kHz
Voltage V		5		peak to peak voltage of square wave
Peak voltage allowed V			20
Current mA			2
Input Capacitance nF		10		± 30% measured at 120 Hz
Temperature ºC	-20		70
Width mm		14		Case:PA6/Black
Height mm		7.5
Weight g		1
Termination		pin

EFM-250DN

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		External Driven		Tone: Square Wave
Sound Pressure Level dB at 30cm	70.46			Measured 80 dB at 10cm
Frequency kHz		4.1		Rated frequency ± 0.5 kHz
Voltage V		9		peak to peak voltage of square wave
Peak voltage allowed V			20
Current mA			2
Input Capacitance nF		10		± 30% measured at 120 Hz
Temperature ºC	-20		70
Width mm		14		Case:PC/Black
Height mm		7.5
Weight g		1
Termination		pin

EFM-250NL

Characteristic	Min	Typical	Max	Notes
Type		Piezo
Excitation		Internal Driven		Tone: Continuous
Sound Pressure Level dB at 30cm	75.46			Measured 85 dB at 10cm
Frequency kHz		4		Rated frequency ± 0.5 kHz
Voltage V	6	12	16	DC voltage
Current mA			8
Temperature ºC	-20		60
Width mm		13.9		Case:PC/Black
Height mm		7.7
Weight g		1
Termination		lead wire

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