The SM1P-Ex smart Behind-the-Neck headsets provide features and benefits to improve safety, reliability, and efficiency. Intrinsically safe Ex: Users of the SM1P-Ex Series headsets benefit from clear communication using its wired or wireless capabilities as well as face-to-face communication while still protecting their hearing and remaining aware of the surrounding work environment. For explosive environments that require ATEX and IECEx certification. The SM1P-Ex series is the next generation, intrinsically safe headset. With customer focus and hazardous environments at the forefront of this robust headset design to enhance safety and communications for improved efficiency in high noise and hazardous workplace environments. Cable connection to a Two-Way Radio available (cable sold separately: SRCK61XXCC01 series); Features: Compatible with industry-leading intrinsically safe two-way radios via wired connection or wireless BT; wireless BT - Connect to intrinsically safe mobile devices (HFP, HSP and A2DP profiles) via wireless BT for conversation and audio streaming; Programmable ‘in-ear’ Volume Limiter: Limit ‘in-ear’ exposure to 82 dB(A); Up to 24 dB NRR; Improved Short Range with additional channel banks for headset-to-headset communication (Range approx. 50 meters or 164 ft); SENS Technology - remain aware of surrounding noises and hazards with 360° situational awareness; Face-to-face conversation in high noise (No need to remove your headset or move to a quiet area), SENS Technology enhances speech while suppressing background noise to a safe level. Clear communication up to 120 dB noise levels with Noise-Cancelling boom mic; VOX capable; Built-in rechargeable (lithium-ion) battery with up to 24-hour battery life and 4 hour charge time; Rugged lightweight design; Available in headband, behind-the-neck, and helmet style; USB for programming allows simple configuration of the headset and software updates. Intrinsically Safe Ex: (ATEX/IECEx/UL/CSA) certifications.