Transducers DB Unlimited Transducers are ideal for applications requiring multiple tones from a single device. These transducers are designed with either electro-mechanical or piezo technology and offer top or side sound port options. Resonant frequency ranges from 730Hz to 5500Hz with sound pressure levels ranging from 65dBA to 110dBA at 10cm. Mounting options include flange, flush, surface, and thru-hole. These Transducers are suitable for consumer devices and medical, industrial, transportation, and fire/safety/security applications.