Kepo piezo transducers 10 45 05khz range kepo kpt g1340p22 6237 the kepo piezo transducer 40 05khz 127mm is able to generate a continuous tone when energised by a 3vp p square wave rated voltage outputs of up to 70db at 3vp p40khz10cm can be achieved suitable for use in professional commercial and industrial applications kepo kpt g1340p22 6237 piezo transducer 40 05 khz 127mm