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Electronic siren without speaker: super-thin design, streamline shape,digital display, clear tone, have memory function. Rated voltage: DC 10.5-13.8V Current: 7A Power: 150W Impedance: 8 ohm Distortion: < 5% Round Frequency: 200Hz-10KHz+3db Three Faceplate function: 1. Tone switch: up is siren, down is horn 2. Tone mode: 6 modes Aux - Yelp -used for clearing the way Hi-lo -used for ambulance Wail 1 -used for Fire Wail 2 -used for police Tool -used for ? Comes with mike

Plug -&- Play 5 1/2" width 1 1/2" thick 6"depth 2 1/2 pounds