KLEIN TOOLS RT250 GFCI Outlet Tester
with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles
Price as of 2026-06-16. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Those who want a top-rated option — in the top 2% of testers by rating
- •Risk-averse buyers — 11,490+ reviews give a highly reliable picture
- •Top 4% bestseller in testers — proven market demand
- •KLEIN TOOLS loyalists — the brand spans 66 products in our database
- •Neoteck 12-1000V AC Non-Contact Voltage Tester Detector — 60% cheaper at $10 (Score A)
📊 Based on data analysis of 185 products in this category.
Mubboo Score: A-
How It Compares
This Product KLEIN TOOLS RT250 GFCI Outlet Tester | Most Popular AstroAI Digital Multimeter Tester 2000 Counts | Best Rated KLEIN TOOLS RT210 Outlet Tester | Best Value Neoteck 12-1000V AC Non-Contact Voltage Tester Detector | |
|---|---|---|---|---|
| Price | $24.97 | $14.59 | $13.98 | $9.99 |
| Rating | 4.8/5 | 4.5/5 | 4.8/5 | 4.5/5 |
| Reviews | 11,490 | 54,848 | 8,902 | 13,301 |
| Mubboo Score | A- | A+ | A | A |
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Check included test leads and consider upgrading them for budget meters; for circuit breaker finders, allow time to learn the scanning process and always do a second pass over the panel.
- Good value for money
- Easy to use
- Accurate / reliable readings
- Useful features like backlight or audible alert
- Compact and portable design
- Quality control issues with test leads or defective units
- Requires patience or learning curve for accurate results
Related Video Reviews
- 📹 The Ultimate Voltage Tester Battle: My Surprising Favorite! — Everyday Home Repairs
- 📹 Best Voltage Testers Under $50 (2026) — Top 5 Non-Contact Pens Reviewed! — TECHATOP
About KLEIN TOOLS
- 66 products in our database
- Average rating: 4.7/5 across all products
- Price range: $9.97 – $699.98
- Categories: carpentry-squares, Coolers, Flashlights, Hand Tool Sets, Headlamps, Knee Braces
Other testers
Bottom Line
KLEIN TOOLS RT250 GFCI Outlet Tester earns Mubboo Score A-. Priced at $25 — a mid-range option, below the category average of $55. Rated 4.8/5 from 11,490+ reviews. Strong buy if: those who want a top-rated option, risk-averse buyers.
Frequently Asked Questions
Is the KLEIN TOOLS RT250 GFCI Outlet Tester worth buying in 2026?
It earns a Mubboo Score of A-, with a 4.8/5 rating from 11,490 reviews — better than 98% of testers we track.
How much does the KLEIN TOOLS RT250 GFCI Outlet Tester cost?
It is currently $24.97 — mid-tier pricing for testers.
How does the RT250 GFCI Outlet Tester compare to other testers?
The category's most-reviewed alternative is the AstroAI Digital Multimeter Tester 2000 Counts (4.5/5, 54,848 reviews, $14.59). The RT250 GFCI Outlet Tester carries a Mubboo Score of A- vs A+.
Sources & References
Mubboo may earn a commission from purchases made through links on this page. Prices and availability are accurate as of the last sync (2026-06-16) and may change.