A device manufactured by Klein Tools that detects the presence of voltage in electrical circuits without requiring physical contact with conductors is generally called a voltage tester. Operation generally involves holding the device near a wire or outlet; if voltage is present, the tester will indicate this through a visual or audible signal.
Employing such a device is a crucial step in electrical work, enhancing safety by verifying circuits are de-energized before any work commences. This safeguards individuals from potential electrical shock and prevents damage to equipment. These testers have become an indispensable tool for electricians and homeowners alike since their introduction.
