The U94 PTT is one of the most rugged and popular single radio push-to-talk switch on the market. Compatible with a wide range of TEA and other legacy headsets the U94 was designed to meet the needs of some of our most elite customers. TEA can configure the U94 to work with pratically any type of communication device such as standard 2 way radios, dual/multi-talk group radios, mobile phones, computers, vehicle/aircraft/boat ICS and more!