Invention Grant
US08525660B2 DC power line control for light bars and sirens 有权
直流电源线控制灯条和警报器

DC power line control for light bars and sirens
Abstract:
A light bar and/or a siren controlled by a control head via control signals on power lines connected to the control head, the light bar and/or the siren. Isolated power line communication (PLC) modules between the light bar, the siren and the control head transmit the control signals over the power lines.
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