310569 COMMUNICATION HEADSET FOR FIXF, HELMET SINGLE EAR +MORE DETAIL 
Communication headset for integration in MSA Gallet F1XF fire helmet  • One or two loudspeakers, in plastic housing with mounting clips.  • Flexible microphone, adjustable in length (80 mm) to optimize position in front of the mouth or the speech diaphragm (BA face piece)  • Downlead Cable with anti-tearing, LEMO connecting plug (green cover).  Operates with an MSA Push-to-Talk (PTT) module enabling connection to the PMR radio.  Connection through an anti-tearing LEMO plug with color codification.  • PTT module with Yellow connector: non ATEX system  • PTT module with Green connector: ATEX system (for use with approved ATEX radios only)  Microphone:  • Noise cancelling Electret, 100Hz-10kHz, distortion < 3%
• Loudspeaker: 32 Ω, 20 Hz – 3 kHz, max power 100 mW  • Amplifier: adjustable gain (0 to 26 dB), 300 Hz – 3 kHz  Nominal output 50 mV RMS, Harmonic distortion 5%  • Down lead Cable: Fire retardant, shielded cable  • Housing: Polyamide (PA6), Fire resistant (V0)  • Operation Temperature: -20°C to +65°C, humidity < 98%  Approvals:  • EMC performance: ESD/EMI: 10 V/m  • Ingress Protection testing: IP56 (tested inside the helmet)  • ATEX (when used with an ATEX certified PTT module)  • ATEX level: II 2G Ex ia IIC T4  Connection with a wide range of brand and types of radios is possible.