The Type T216 is one of a series of underwater transducers available from Neptune that are designed for use in transponders, beacons, acoustic release mechanisms and data communication systems.

This versatile transducer combines efficient broad band transmission and reception suited to tracking applications on underwater vehicles and trials ranges.

The anodised aluminium base incorporates a threaded fastening and 'O' ring seal allowing simple and direct mounting onto equipment or pressure housings. Electrical connection is via a twisted screen pair cable.