Can a Converge router be installed outside without additional weather protection?

Yes. All WiFiRanger outdoor routers are designed to survive the same environment as your vehicle. All are waterproof (IP66) when installed properly, UV-resistant, resistant to vibration, and can survive the temperatures to which your vehicle will be exposed. Of course while a Converge outdoor router is weather-resistant, any drilled holes or routes for cabling must be properly sealed on the vehicle exterior. This prevents any water leakage due to improper installation.