Miniature-PCB-Piezo-Transducer-RVFM-RVFM-This-piezo-transducer-is-able-to-generate-a-range-of-audible-tones-&-frequencies-when-energised-by-a-12V-peak-square-wave-Provided-it-is-mounted-rigidly-in-the-prescribed-manner-outputs-of-up-to-80d B-can-be-achieved-Miniature-PCB-Piezo-Transducer