The T218 is one of a group 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 T218 combines efficient broadband transmission and reception with an almost hemispherical beam pattern.

The all moulded construction achieves a design that is compact, lightweight and robust. A screened twin cable moulded into the side of the device can be fitted with a waterproof connector to mate with customer equipment.