The Active Noise Cancelling (ANC) Remote Speaker Microphone (RSM) enables users to communicate clearly in harsh ATEX environments such as oil refineries, fires and hazardous locations. Enhanced audio with wind porting allows the user’s voice to be heard clearly while eliminating surrounding noise. Exaggerated controls, including a large front push-to-talk button, allow ease of use even while wearing protective gear. The rugged housing includes emergency and volume controls that are large for quick access, but protected to avoid accidental activation. The device is compatible with various firefighter breathing devices.