Klein Tools RT210 GFCI outlet tester

Tests standard and GFCI receptacles

Offer details & conditions

Single RT210 outlet tester for 110/125V AC North American three-wire outlets. Sold and shipped by Amazon.com. Free shipping with Prime or a $35+ order. No coupon or subscription stated.

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Reported by Slickdeals; reviewed Oct 19, 2026, 9:11 AM EDT. The source did not specify an expiry. Final prices, coupon eligibility and availability can change. Confirm the offer at checkout.

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