Telex MH-302, Dual-Sided Premium Lightweight Headset, A4M Connector. The MH-302 and MH-302L Series Dual-Sided Headsets and Headphones provide the newest design in headset technology from RTS. Designed with you, the user, in mind with its rugged, modular design, lightweight construction, installation options, and its multi-functional use. The modular design allows you to interchange modules to allow for the best headset configuration for any environment. The noise-canceling microphone, combined with the headphone transducers, provide clear and precise communication in noisy environments. Finally, this headset is not limited to live studio or venue communications. By installing the appropriate module, you can connect to an MP3 player or many other types of audio devices and listen to the programming of your choice. The MH Series Headsets provide clear communications for professional applications including live remote or studio broadcasting, film, TV, or theater intercom communications. The MH Series Headsets and Headphones are audio level limited and conform to the EU Council Directive 2003/10/EC. The time-weighted average of noise exposure levels for a nominal 8-hour working day is not expected to exceed 85dB SPL and a peak of 137dB SPL.