A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus. The tester consists of an indicator in series with a source of electrical power...
An electrical tool used to identify and diagnose a circuit as either open or closed. 
- A device that tells whether a circuit is capable of carrying electricity.
A device that tells whether a circuit is capable of carrying electricity.
A device that tells whether a circuit is capable of carrying electricity.