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Measurement Category II is applicable to test and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low-voltage MAINS installation.Works on GFCI outlets and confirms operation of the ground fault protective device. Built to withstand a 6.6-ft (2 m) drop. GFCI Tester detects the most common wiring problems in standard and GFCI receptacles.
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Uses one 9V battery in receiver only Transmitter does not require a battery. Easily accessible battery compartment.Transmitter is powered by the circuit when connected to the electrical outlet or fixture.
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Press black 'overload' button to test circuit interruption.
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