Highly efficient ear muffs for protection of loud noises of all pitches in factories and areas where air compressors and turbines are used. The challenge is to balance personal attenuation devices with comfort and the ability of communication, so that workers will wear their hearing protectors all the time. MSA Sordin’s Connected by Cable is a comfortable hearing protection line equipped with a noise cancelling microphone and a down lead for connection to a two-way radio. Product features: - Can be connected to mobile phones in combination with a separate adapter. Supplied with a 2.5 mm stereo plug, -Also available for direct connection to communication radios such as Motorola, Kenwood, Icom, etc. and DECT phones, -Noise cancelling boom microphone permits two-way communication with minimal interference from background noise, - All electronic features are controlled using three distinct push buttons, - Certified to EN 352-1 (headband version), - Certified to EN 352-3 (helm mounted version), -SNR 28dBA (headband version), 27dBA (helm mounted version)