The Radar is an item availible in Trouble in Terrorist Town. It can be bought by both Traitors and Detectives. Every 30 seconds, the radar will perform a scan which will display every player on the map as a circle, their exact position and distance from you, and role(but if you're innocent it displays everyone but revived traitors as detective or innocent) at the time, but doesn't show name.

someone needs to add a picture