uxcell 5 Pcs DC 3-24V 85dB Sound Electronic Buzzer Alarm Black 23 x 12mm Product Name : Electronic Buzzer;Sound-making Type : Continuous Sound;Working Voltage : DC 3-24V Rated Current : 12mA;Frequency : 4000500Hz;Sound : 85dB Body Diameter : 23mm / 0.9";Overall Size : 35 x 23 x 12mm / 1.4" x 0.9" x 0.47"(L*W*T);Mounting Hole Diameter : 3mm/ 0.1" Mounting Hole Distance : 30mm/ 1.2";Wire Length : 10cm / 3.9";External Material : ABS Color : Black;Weight : 20g;Package Content : 5 x Electronic Buzzer