Pocket-sized voltage tester. Insert in electrical receptacles or hold next to electrical cord to test for live current. Red light or sound indicates live current. A must-have for any renovator, even one who is not contemplating doing electrical repairs.
Pros
- May save your life.
- Inexpensive: under $15.
- Easiest way to test current.
- If batteries fail, it may appear that current is dead even if it is not. Note: always test the voltage-tester before using it.
