There are certain electronic stud finders which are labeled as multipurpose". They are intended to identify extra items within walls, such as live electrical lines and plastic pipes, to ensure that you do not nail or cut into anything hazardous.
Stud scan and deep scan are two modes that can be found on these types of devices. A stud scan will detect studs and their edges, while a unit that also features the “deep scan” feature can identify other items that are usually located inside a wall and that you definitely don’t want to puncture when drilling holes in the wall.