
Anyone, even with minimal knowledge, can use this little device to quickly and accurately check outlets for correct wiring and voltage. I give it a low rating for its size/shape as it's large enough to block access to the test/reset button on most GFCI sockets (I carry a compact insulated screwdriver with me for these tests). It may also not fit in some waterproof boxes. Conclusion: I liked this tester so much that I bought a second device for my brother.

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