Kepo piezo transducers 28 42 05khz range kepo kpi g4514l 6315 the kepo piezo transducer 32 05khz 45mm is able to generate a continuous fast pulse tone when energised by a 12vdc rated voltage outputs of up to 92db12vdc30cm can be achieved suitable for use in professional commercial and industrial applications kepo kpi g4514l 6315 piezo transducer 32 05 khz 45mm