Features:6" 8" and 10" gong sizes Low power drain for efficient operation over long wire runs Completely assembled Weatherproof Hazardous location AC vibrating bells produce a distinctive loud and clear ringing sound that is free of mechanical clatter. The striker continues to strike the gong in rapid-fire action as long as current is applied. Mounts to any solid surface using 3/8" (10mm) fasteners. Units fitted with a sealing fitting for 3/4" (19mm) conduit and wire leads for power connections. Specified for timing scheduling paging and general alarm applications in refineries gasoline storage and dispensing areas petrochemical manufacturers spray paint areas aircraft hangers grain dust areas in graineries and flour mills and industrial firms using flammable liquidsProduct Specifications DESCRIPTIONVibrating Bell MANUFACTURERS PART NUMBER340EX-6G5 VOLTAGE24 BRANDEdwards Signaling¢ GONG SIZE INCHES6 LED COLORSGray