Product Description NOTE: 1. C≥ 60nF2. fs=(12.9± 3%)KHz3. Δ F≥ 1.9 KHzM: P-42This model is suitable for the ocean exploration. Piezoelectric ceramic elements are widely used in various fields electroacoustics, ultrasonics, communications, test and measurements, automatic control, medical ultrasound, ignition, etc. Types, specifications and characteristics of partial piezoceramic elements produced by our company are listed in the following table for broad customers to choose. Special products can be developed and fabricated according to client's requirements. Packing: Carton Min. Order: 500PCS