megaphone/Mutifunctional megaphone/megaphone supplier/megaphone factory/megaphone exporterSiren 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 |