The RadioSounder from Mimes gives the power of IoT to the field sounders, enabling sounder to only require local power. This gives you SIL capable sounders with no IO restrictions. Cyber security designed in from the core with 128-bit AES encryption. The RS-S1F is a high output, 115dB(A) wireless alarm horn sounder with a re-entrant flare horn. The robust IP66 corrosion proof 316L stainless steel enclosure ensures suitability for all Zone 1, 2, 21 & 22.