The flameproof BExS110 alarm sounders are suitable for Zone 1, 2, 21 & 22 applications. Approved to IECEx, ATEX, Ex EAC, and INMETRO standards. Available as SIL 1 and SIL 2 compliant. Sound level outputs of up to 117dB(A) at 1 meter with a choice of 32 alarm tones and 3 remotely selectable stages. The BEx explosion-proof Ex d range features enclosures manufactured from corrosion proof, marine grade copper-free LM6 aluminum with chromate, and powder coat finish. Available in MED approved and SIL2 compliant versions. For fire applications, the BExS110D 24V dc siren is CPD EN89/106/EEC compliant (EN54-3 tested).