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EFM-940L

Features: 
Low frequency
Low consumption
With circuit inside
Super-thin height
Characteristic Min Typical Max Notes
Type Piezo
Excitation Internal Driven Tone: N/A
Sound Pressure Level dB at 30cm 70 Measured 70 dB at 30cm
Frequency kHz 3.1 Rated frequency ± 0.5 kHz
Voltage V 3 12 20 DC voltage
Current mA 8
Temperature ºC -20 70
Width mm 31 Case:PC/Black
Height mm 5.2
Weight g 3
Termination lead wire
Characteristic Response: 

Dimension Drawing: