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Voltmeters are used for measuring electric potential difference between two points in an electric circuit. Multimeters combine several measurement functions, such as the determination of voltage, current, and resistance, into one unit.
These pocket — sized AC Line Voltage detectors/testers have a nonconductive outer surface for user safety. Simply touch the tip of the tester to an outlet, terminal strip or cord; if the tip glows red and unit beeps, there's voltage in the line. Ideal for quick checks for energized circuits or ground faults. Available for sale in the United States and Canada only.
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