The T204 is one of a series of transducers available from Neptune that have been designed for use in transponder beacons, tracking systems,acoustic release mechanisms and data communication systems.

A versatile transducer the T204 combines efficient broad band transmission and reception with an almost hemispherical beam pattern.

This transducer has been successfully used to track and position ROV’s down to depths of 1500 metres.

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.