| Megaphone/Portable Megaphone YMH-100PN:1.power sourece: 12VDC(8*UM-3)2. Max Output:120dB/1M3.Current Consumption:1A Max4.Service Lifetime of Siren:18h(Until 100dB/1M Output)5.Two Tone:(1)Siren (2)talk(3)Whistle6.Material:ABS Plastic7.Size:225*225*355mm8.Net Weight(Without Battery):900g9.Transmission Distance:1500m | 
