The HP140IS and HP150IS have been approved by Baseefa (2001) Ltd for use in Zone 20 conditions and are certified to EX II 1GD Ex ia IIC T4 Ga(-20°C≤Ta≤+70°C) Ex ia IIIC T135°C Da(-20°C≤Ta≤+70°C) certificate number Baseefa03ATEX0101X/3. This certification covers both gaseous and dusty atmospheres.