uxcell Piezo Disc Brass 20mm Piezo Pickup Plate Diameter Piezo Sensor CBG Guitar Tauchi Sensor Buzzer Pack of 5

High performance Resonance frequency 3.05.0±0.5KHz, resonance impedance less than 300Ω, low power consumption and high sensitivity.Size Piezo pickup plate diameter 20mm, thickness 2mm Small, thin, lightweight Package 5 x buzzer film. Made of brass, ceramic, heat resistant, stable, durable and long service life.Easy to Use These pre-wired piezo pickups are easy to install. Footstopper, a home-made instrument for detecting sounds and vibrations.Wide range of applications Used for beginners such as touch sensors, electronic drum triggers, buzzers, and unique contact microphones for watches, cameras, mobile phones, electronic toys, computers, etc.