Kepo minature buzzers 23 03khz27 03khz31 05khz kepo kpx g1605a 6404 the kepo minature buzzer 23 03khz is an electronic buzzer that offers a high but rich sound able to generate a continuous pulse tone when energised by a 5vdc rated voltage outputs of up to 85db5vdc10cm can be achieved suitable for use in professional commercial and industrial applications kepo kpx g1605a 6404 miniature buzzer 23 03 khz