The UltraSound Intercom is voice activated - turns on instantly when the user starts speaking and turns off when the users stops, which eliminates constant noise pickup thorugh the headset microphone. The Sigtronics intercom interfaces to single or dual mobile radios, allowing all communications, both transmit and receive, to be ehard through each headset. Compatible with cellular telephones, radio transmit is accomplished by way of the headset microphone through use of a push-to-talk switch. This design allows placement of the push-to-talk switch in the most accessible loaction and eliminates the need to reach for the hand microphone. As an added safety feature, the intercom function is automatically disabled while transmitting so that only the voice of the person transmitting goes over the air, however his voice is heard by all crew members.
