1 12V,230VAC or PV input voltage 2 Avaliable with GSM or Bluetooh 3 Software included 4 28.5cm,visible at 180m The Customized:The RS-752-plus allowsyou to set up your own LED texts and graphics. Thanks to the provided software,speed and text (graphics) are easily changeable. For example: up to 25 km/h “THANKYOU”,25-30 km/h “CAUTION! CHILDREN”,30-40 km/h “SLOW DOWN”, over 40 km/h “TOOFAST” ( ...