DESCRIPTION SFM-27 DC 3-24V 95DB Electronic Buzzer Features: Model No. : SFM-27; Sound-making Type : Intermittent Sound; Alarm Height: 15mm Alarm Diameter: 29mm Alarm Height: 15mm 2 Mounting Holes distance: 40mm 2 Wires length: 105mm Rated Voltage: 12V Operating Voltage: 3-24V Rated Current(MAX): 20mA Min Sound Output at 10 cm: 95 DB Resonant Frequency: 3100±500 Operating Temperature: -20 to +80 (Degrees Celsius) Color: White