Explosion-proof industrial analog telephone wall mounting type. Certified: II2G Ex emb[ib] IIC T6 Gb, II2D Ex t IIIC T80°C IP66 Db, I M2 Ex emb[ib], I Mb -25°C≤Ta≤60°C. Direct calling. Equipped with handset and stainless steel reinforced cord. Version without display and keyboard. Made of polyammide 66, resistant to atmospheric agents. IP66 protection degree. Mechanical resistance according to STD EN 60079-0. Electronic bell adjustable up to 90 dB at 1 meter. Supply voltage: 24Vdc to 66Vdc. Dimensions: 245x225x129mm. Operating temperature -40°C/+70°C (-25°C/+60°C for IM2).