LOUD SPEAKER; CERTIFICATION: EX DB IIB T5 GB/EX DB E IIB T5 GB / EX TB IIIC T100DEGC DB IP66 / EX DB IIC T4 GB/EX DB E IIC T4 GB / EX TB IIIC T135DEGC DB IP66 / ATEX BASEEFA15ATEX0155X / IECEX IECEX BAS 15.0104X; GAS GROUP: IIC; OPERATING VOLTAGE: 24V / 120TO230 V; CURRENT TYPE: DIRECT CURRENT/ALTERNATING CURRENT; NOMINAL CURRENT: 0.37A / 0.06TO0.04 A; FREQUENCY: 50/60HZ; POWER: 15W; OPERATING TEMPERATURE: -50TO70°C; COMPLEMENT: STAINLESS STEEL AISI 316 U-BRACKET MOUNT;25W DUAL ENTRY;