FHS Behind-The-Head Fire Safety Industrial Headset by Rugged Radios stands out with universal design, facilitating compatibility with almost any type or brand of fire intercom by using optional coil-cords. Equipped with a dual 5-pin quick-disconnect feature, the coil cord hangs from either side of body. Accessible in three configurations: No buttons; PTT button on ear dome; Mic On/Off button. Core features include DNC microphone for clear transmissions, Clear Hear speakers for excellent audio performance, behind-the-head design for comfort, noise cancelling hybrid EM56 microphone, rugged full flex mic boom, large detent volume control, and a carbon fiber style finish. Can be paired with David Clark, Avcomm, and Sigtronics headsets using coil cord CC-1/4; Rugged and Firecom headsets using CC-FIRECOM.