Battery-Operated Proving Unit, AC Voltage Range 50 to 690, Display LED, Battery Type AA, Standards EN61010, Includes (6) Batteries, Manufacturers Warranty Length 1 yr Verify correct function of 2-pole voltage testers with this proving unit. It is a portable, battery-operated automatic tester designed to generate a stepped range of voltages. The LED indicators show each voltage step. The rugged case has a magnetic base for hands-free operation. The power indicator provides visual low-battery alert. Includes AA batteries.
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