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 |