An electrician is at a customers residence testing a communications table for a short circuit or continuity. The copper cable is complete from end to end. A test instrument set on “title”, and it sounds a tone when it detects a short circuit. Which of these test instruments is the electrician using?

An electrician is at a customers residence testing a communications table for a short circuit or continuity. The copper cable is complete from end to end. A test instrument set on “title”, and it sounds a tone when it detects a short circuit. Which of these test instruments is the electrician using?