Descriptions: Plastic housing, DC 12V working voltage, black and red 2 wire, convenient for wiring. An ideal item for industrial use. Specifications:Product Name: Electronic BuzzerModel No: BJ-1ESound-making Type:Continuous SoundRated Voltage: DC 12VRated Current: 50mASound Pressure: 95dBSound Type:Music SoundOverall Size: 69 x 55 x 54mm/ 2.72 x 2.17 x 2.16 inch(L*W*H)Mounting Holes: 6 mm/ 0.24 inchMounting Hole Distance:29mm/ 1.14 inchWire Length:18cm / 7.09 inchExternal Material: PlasticColor:RedWeight: 57g Package Content:1Pcs x Electronic Buzzer