szzijia 20PCS 35mm Prewired Piezo Elements Buzzer Sounder Sensor Trigger Drum Disc auspowers_batchone You can use the matched B07TZWDHYR You can use the matched anti lose rope add drops gradually until you reach the desired color 5 KHz Resonant Impedance: 400Ω max Capacitance: 40000pF ± 30% at 100Hz Input Voltage: 30Vp p max Operating Temperature: 20 to +70°C Storage Temperature: 30 to +80°C Base Material: Brass Package Included: 20PCS 35mm Piezo Elements buzzer Sounder Sensor Trigger Drum Disc Uncased piezo elements Speech and music applications Wide tonal response Piezo element Specification: Type: External drive type element Metal Plate Diameter: 35mm Resonant Frequency: 2