3M Peltor Wired Ground Mechanic PTT Adaptor for connecting 3M Peltor Ground Mechanic Headsets to aircraft. The 3M Peltor Wired Ground Mechanic PTT Adaptor is built into a functional, watertight, sturdy shell with no protruding parts, and designed to fit the size and shape of a hand. Sturdy clamp that can be twisted 360° for easy attachment in all situations. The PTT button is logically placed and specially designed to be easy to use even with heavy gloves. Connector cables are available for the most common communication radios and telephone systems on the market. Sealed to IP65.