Klein Tools RT250 GFCI outlet tester with LCD

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Offer details & conditions

RT250 standalone receptacle tester. Sold and shipped by Amazon.com. Source reports $16 and free shipping with Prime or a $35+ order. Amazon asks buyers to add the item to cart to see details. No coupon or expiry stated.

Source page reviewed; retailer checkout not independently confirmed.

Reported by Slickdeals; reviewed Oct 20, 2026, 9:03 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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