Product Name : Electronic Buzzer;Model No. : SFM-27;Sound-making Type : Continuous Sound;Rated Voltage : DC 3-24V
Rated Current : less than 12mA;Sound Pressure : more than 95dB;Operating Temperature : -20C to +45C
Body Diameter : 30mm / 1.2″;Overall Size : 47 x 33 x 25mm / 1.85″ x 1.3″ x 1.0″(L*W*H);Mounting Hole Diameter : 3.5mm / 0.138″