Does this work to simply test if an outlet is working ( I'm not an electrician, so in other words if it's "hot" ) ? Even not talking about gcfi.

Yes, this outlet tester will verify that there is current flowing in the socket ("live"), but importantly, it will tell you if the socket is wired correctly. Sometimes electricians or "DIYs" wire receptacles incorrectly, putting the neutral wire to the hot terminal and the hot wire to the neutral terminal, which will work but which will make some electrical devices unsafe to use. This will tell you immediately if it is wired correctly, it primary function.

Can I attach a 3 prong adapter to my 2 prong outlet then test with this device?

The whole point is to test all 3 conductors to assure they are in the right orientation. But, I bit and tried it out of curiosity. Drum roll please - Open Ground! But you probly knew that.

Does this fluke st120+ gfci socket tester come with a standard warranty, e.g. 12 or 24 months?

This model has a 2 year warranty.

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⚡ Test smarter, work faster, stay safe with Fluke ST120+!

PORTABLE POWERHOUSE - Lightweight and compact, this tester fits comfortably in your toolkit and stands up to rugged jobsite conditions.
INSTANT WIRING CLARITY - Bright LEDs provide fast, foolproof identification of miswired outlets, saving you time on site.
GFCI SAFETY VERIFICATION - Integrated GFCI test button ensures your outlets’ ground-fault protection is working perfectly, keeping your projects safe and compliant.
AUDIBLE BREAKER DETECTION - Use the built-in beeper to instantly confirm if breakers are switched on or off—no more guesswork or extra trips.
TRUSTED PROFESSIONAL GRADE - From Fluke, a USA-made tool engineered to Cat III 300V standards—reliable performance you can count on every time.

The Fluke ST120+ GFCI Socket Tester is a compact, durable electrical testing tool featuring bright LEDs for quick wiring diagnostics, an integrated GFCI test button for safety verification, and an audible beeper to identify breaker status—designed for professionals who demand accuracy and efficiency on every job.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

€ 114.26

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Brand	Fluke
Power Source	Corded Electric
Style	Modern
Colour	Yellow
Item Weight	0.07 Kilograms
Item dimensions L x W x H	5.8 x 7.4 x 2.5 Centimeters
Specification Met	Cat Iii 300 V
UPC	195112033586
Manufacturer	Fluke
Country of Origin	USA
Model number	ST120+
Number of Memory Sticks	1
Item Weight	70 g
Product Dimensions	5.79 x 7.37 x 2.49 cm; 70 g
Batteries	12 AA batteries required.
Item model number	ST120+
Item Height	0.98 Inches
Item Width	2.9 Inches
Included Components	Outlet Tester
Are batteries included?	No

Fluke ST120+ GFCI Socket Tester with Audible Beeper

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