Voltage detectors, used to verify live or de-energized conductors, may be used with rubber insulating gloves or hotsticks using the splined universal end fitting. Testers indicate the presence of voltage with an extra bright LED light and a distinctive audible signal. Recommended that the tester be moved closer to the conductor until warning is indicated or until it touches the conductor, apparatus, or test point. Test the unit on a nearby energized conductor. Each tester requires three C-cell batteries (included). Portable and lightweight design. Models 4356 and 4367 voltage detector kits contain a detector, storage case and adapter. Warning: do not assume conductors are dead or will remain de-energized. Always install proper grounding devices before working.