3 tones 50W alarm siren speaker 1.Electronic Siren 2.With Remote Control 3.12V, 50W, 110DB ... 4.155x100mm Technical parameters 3 tones 50W alarm siren ... controlRated Voltage: 12V DCSoundS: 3 Tones50W110DB150x100mmIncluding: Horn, Siren, Police, Fire Alarm, Ambulance, Clear The Way, Traffic, EngineeringWorking life: ≥10000 hours Car ...