Peltor LiteCom radio system 204100, communication solution for Protos integral safety helmets, electric microphone, built-in radio module for communication with several participants, equipped with loudspeakers and microphone for voice recording, supports two-way communication as required for radio or telephone applications, contact via license-free PMR446 band or on special channels in the 70cm band, compatible with other analogue radios in the same band or channel, noise reduction 33dBA