uxcell DC 3-24V 110dB Industrial Electronic Continuous Sound Buzzer Product Name : Electronic Alarm Buzzer;Sound-making Type : Continuous Sound;Rated Voltage : DC 3-24V Sound Pressure : 110dB;Overall Size : 43 x 40mm / 1.7" x 1.6" (D*T) Thread Diameter : 3mm / 0.12";Mounting Hole Distance : 33mm / 1.3" External Material : Plastic;Color : Black Weight : 35g;Package Content : 1 x Electronic Alarm Buzzer