ITEM NAME:10PCS DC 12V Wired Connector Active Electronic Buzzer 85dB F8D4 10PCS DC 12V Wired Connector Active Electronic Buzzer 85dB F8D4 Plastic housing, DC 12V rated voltage, 2 wired connctor, convenient for connecting. They have good characters like small cubage, low wastage and high voice pressure. Product Name : Active Electronic Alarm Buzzer; Rated Voltage : DC 12V; Resonance Frequency : 2.8 +/- 0.5KHz Sound Pressure : greater than equal 85dB/10cm/5VDC; Current Consumption(Max.) :less than or equal to 42 mA 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 Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.