High Power/Siren/Whistle Megaphone/Amplifier YMH-140: 1.power sourece: 12VDC(10*UM-1) 2. Max Output:110dB/1M 3.Current Consumption:2A Max 4.Service Lifetime of Siren:15h(Until 100dB/1M Output) 5.Two Tone:(1)Siren (2)talk(3)Whistle 6.Material:ABS Plastic and Aluminum 7.Color: Grey 8.Size:355*355*520mm 9.Net Weight(Without Battery):3100g 10.Transmission Distance:2500m Product Advavtage: 1.Friendly material:our product is made of environmental friendly material. 2.Energy saving:our product averagely uses 1/3 of the energy required by our competitor's product. 3.Light weight:our product is on average 30% lightweight than our competitor's products. Product Specification: 1.Power indicator included to prevent trouble while speaking 2.Comes with Alarm and Siren ability |