KIS Siren is an Emergency Vehicle Warning System (EVWS) for use on vehicles, such as fire engines, ambulances and police cars. Siren Range 2 km is a highly effective siren device offering consistent and loud audible warnings to all road users within a 2 km range. Built with high-quality materials and components, the siren delivers strong tones that increase in pitch from low to high to ensure optimum coverage of buildings, tunnels etc., making KIS perfect for use in off-road operations. KIS Siren Range 2 km is a professional and powerful siren with sound intensity. It can warn the public of the possible danger and trigger their attention to be alert before disaster strikes.