DAOKAI 20pcs 27mm Piezo Disc Piezo Pickup Reed Piezo Amplifier Disc Microphone Drum Trigger Acoustic Pickup with Buzzer with Adhesive Foam Sticker for

Ships from Japan 🎖️【Function】: Piezo discs are an essential component in acoustic instrument pickups, contact microphones and electronic drum triggers. 🎖️【Material】: Made of brass and ceramic, it is heat-resistant, stable, durable and has a long service life. 🎖️【Easy to Use】: These pre-wired piezo pickups can be easily installed and used on cigar box guitars, foot stompers and other homemade instruments to detect sound and vibration. 🎖️【Performance】: Resonant frequency (kHz): 4.6+/- 0.5 KHz; Resonant impedance: 300Ω max; Capacitance: 28000PF +/- 30%. Low power consumption and high sensitivity. 🎖️【Size】: Piezo pickup plate diameter 27mm/1.06inch, thickness 0.4mm/0.01inch, wire length 10cm/3.93inch. 🎖️【Applications】: Beginners can use it as a touch sensor, electronic drum trigger, buzzer, make your own contact microphone, also can be used for clocks, cameras, phones, electronic toys, computers, etc. 🎖️【Product Contents】: 20 x 27mm Piezo Pickup, 20pcs Adhesive Foam Stickers. Piezo discs are essential components in acoustic instrument pickups, contact microphones and electronic drum triggers. Specifications Plate material: Brass Type: Externally driven element Resonant frequency (kHz): 4.6+/- 0.5 KHz Resonant impedance: 300Ω max Capacitance: 28000PF +/- 30% Storage temperature: -30℃ to 70℃ Outer diameter: 27mm / 1.06inch Inner diameter: 20mm / 0.79inch Lead length: 10cm / 3.93inch Suitable for DIY projects, contact microphones, cigar box guitar pickups, touch sensors, drum triggers, homemade speakers, buzzers, etc. Package Contents: 20pcs 27mm Piezo Pickups 20pcs Adhesive Foam Stickers