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Klein Tools RT250 GFCI Outlet Tester w/ LCD Display

$16
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Amazon / Home Depot has Klein Tools RT250 GFCI Outlet Tester w/ LCD Display for $16. Shipping is free with Prime or from Home Depot.

Posted October 6, 2026 at 20:39 PM EDT
by cheetah

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By anonymous on 10/08/2026, 08:53 AM EDT
Anything with a plug can be a tester. Why waste money on this?

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