uxcell 10PCS DC 12V 2 Wires Connector Active Plastic Electronic Buzzer 85dB Product Name : Active Electronic Alarm Buzzer;Rated Voltage : DC 12V;Resonance Frequency : 2.8  0.5KHz Sound Pressure : &gt;= 85dB/10cm/5VDC;Current Consumption(Max.) : &lt;=30mA;Operating Temperature Range : -20-+70C Body Size : 12 x 9mm / 0.47" x 0.35" (D*H);Wire Length : 5cm/2" External Material : Plastic;Color : Black Weight : 19g;Package Content : 10 x Active Electronic Alarm Buzzer