DUAL COMMUNICATION U94 V2 PTT-KENWOODU94 Dual Comm Push to Talk switch is one of the most popular PTTs on the market. The U94s rugged and contoured design allows it to be easily affixed onto almost any type of vest or uniform. The removable back clip allows for right or left side wear. To prevent the ingress of water or debris into the input socket, the U94 has a protective boot that seals around the headset connector.