""The new SHEM helmets will also provide a significant increase in the safety of medical teams during flights. In addition to meeting all standards of aeronautical operation, the new helmets include an integrated audio system, completely compatible with the aircraft equipment and the equipment used by INEM, allowing the medical team to communicate with the Urgent Patients Guidance Centers (CODU) of INEM and with the helicopter pilots during the flight, without the need to remove the helmet."
https://www.facebook.com/InstitutoNacionaldeEmergenciaMedica