a double-ended siren . powered by a three phase motor. designed for roof or pole mounting. PERFORMANCE PARAMETER:Sound Rating:119±2dB(A) @1MElectric Motor:0.75Kw, 380/ AC, 50/60HzIP Rating:IP55 Ex dll BT4Output Frequency:500/560±20HzNet Weight: 43KgPacking Size: 50x35x45CM Explosion Proof Electromechanical Siren