For hand-held units there are two fundamental physical configurations : the `` integral '' unit with both detector and electronics in the same unit , and the `` two-piece '' design which has a separate detector probe and an electronics module connected by a short cable .
For hand-held units there are two fundamental physical configurations : the `` integral '' unit , with both detector and electronics in the same unit , and the `` two-piece '' design which has a separate detector probe and an electronics module connected by a short cable .