5 or 10 Piezo Elements Sounder Sensor Trigger Drum Accoustic Disc 20mm 27mm 35mm
27mm 4.0KHz ±0.3KHz 200W 25,000pF ±30%. 20mm 6.0KHz ±0.5KHz 200W 14,000pF ±30%. 35mm 2.6KHz ±0.3KHz 200W 24,000pF ±30%. · Available in 20 mm, 27 mm and 35 mm with 100mm (+/- 10mm) flying leads.