... Traffic Controller, Intelligent Traffic Controller, 28 Outputs, BBE-C, BBE LED, Shenzhen Bang-Bell Electronics Co., Ltd. Features:1) 28 channels of ... years10) Auto testing the green conflict. In case of green conflict, it automaticallybecomes yellow flash11) Equipped with ... to the central computer and the auto checking of the traffic flowSpecifications: ModelGreen Flash Time (s)Green Flash Frequency ...