Specification Brand : LiebeWH BulletPoint : 10pcs 12v Active Buzzer Magnetic Long Continous Beep Tone Alarm Ringer 12mm MINI Active Piezo Buzzers Fit For Arduino Diy Kit BulletPoint1 : Disc Specification: The piezoelectric pickup disc has a diameter of 27mm and a thickness of 0.4mm, with about 48cm wire, which is lightweight, thin, and . BulletPoint2 : Good Performance: The resonant frequency is 4.6±0.5KHz, the maximum resonant impedance is 300Ω, this piezo disk has low power consumption and high sensitivity. BulletPoint3 : Brass Material: These piezoelectric pickup discs are made of excellent brass material, with good stability, high temperature resistance, and has a long service life. BulletPoint4 : Multiple Usages: Including 12 piezo discs, suitable for beginners to use in touch sensor, electronic drum , buzzer, for making microphone, watch, electronic toy, etc. BulletPoint5 : Applicable Range: These pre wired piezoelectric discs have compact size, suitable for cigar boxes, guitars, pedals, as well as various string and percussion instruments. BulletPoint6 : Dimensions: Approx 1.1" x 0.7" Color : Blackx3pcs ExternallyAssignedProductIdentifier1 : 0679771525489 ExternallyAssignedProductIdentifier2 : 679771525489 IncludedComponents : piezo buzzer ItemName : 12Pcs 27mm Piezoelectric Disk Brass Piezoelectric Pickup Sensor Piezo Disc Transducer with 48cm Wire for Drum and Buzzer ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 21 centimeters ItemPackageDimensions_Width : 9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : piezo-transducers Manufacturer : LiebeWH Material : lead Material1 : brass Material2 : copper ModelName : LiebeWH3an6cfo1ku ModelNumber : LiebeWH3an6cfo1ku MountingType : Wall NumberOfItems : 1 PartNumber : LiebeWH3an6cfo1ku ProductDescription : Disc Specification: The piezoelectric pickup disc has a diameter of 27mm and a thickness of 0.4mm, with about 48cm wire, which is lightweight, thin, and . Good Performance: The resonant frequency is 4.6±0.5KHz, the maximum resonant impedance is 300?, this piezo disk has low power consumption and high sensitivity. Applicable Range: These pre wired piezoelectric discs have compact size, suitable for cigar boxes, guitars, pedals, as well as various string and percussion instruments. Brass Material: These piezoelectric pickup discs are made of excellent brass material, with good stability, high temperature resistance, and has a long service life. Multiple Usages: Including 12 piezo discs, suitable for beginners to use in touch sensor, electronic drum , buzzer, for making microphone, watch, electronic toy, etc.