Ready 2 Talk manufacture a range of PA systems to suit most requirements, from discrete permanent wired-in options to portable sets that can be moved between vehicles within your fleet in moments.
Have a browse at the options and please contact us about your application. We like tricky applications and will work with you to find a solution. Ready2Talk support is excellent and have manufactured intercoms to our requirements. (The 24V PA4 for light Japanese Trucks, unique to us, is an example).