Piezo Sounder / High-Output Piezo Alarm Transducer

EFM-290ES

ELECTRICAL SPECIFICATIONS .
Diatemer [mm] 40
Height [mm] 15
Length [mm] /
Width [mm] /
Mounting Type PIN
SPL [dB] 90
Frequency [kHz] 3.6±0.5
Rated Voltage 9VDC
DIMENSIONS: (Unit: mm) .

SOUND PRESSURE LEVEL .