alarm alarmBrief IntroductionName of Product: Alarmmagnet5.4 OZ,Y25materialblack ABST-yokeφ64*φ25.4*13.5*3,blue zinc platedwasherφ64*φ27.2*3,blue zinc platedVoice Coilsigle 8 0HM,1",2layers,KSV,EI wireconePolymer Membrane packingplastic bag+color box+master carton power rating20WFrequency ResponseF0(1500HZ)~15000HZ alarm