Rvfm piezo transducer 1ma 80db rvfm abt 402 rc piezo transducer 5v ac voltage rating 1ma current 80db at 10cm sound output 4000hz frequency 13 8mm diameter 1g weight low power consumption pcb mountable wave solderable and washable sealed base rvfm abt 402 rc 5v ac pcb piezo transducer