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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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fluke ST120+ GFCI Socket Tester with Audible Beeper

Product ID: 493808614

Details

Brand
Fluke
Colour
Yellow
Item weight
0.07 Kilograms
Power source
Battery
Style
Modern

💡Bright LEDs for instant wiring status

🔔Audible beeper for quick breaker ID

🛠️Compact rugged design for every job

Description

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

RUGGED PORTABLE - Compact, durable design built to withstand tough jobsite conditions and fit easily in your toolkit.
GFCI SAFETY VERIFIED - Integrated GFCI test button ensures your outlets meet safety standards with a simple press.
INSTANT WIRING CLARITY - Bright LEDs provide immediate, foolproof identification of miswired outlets, saving you time and guesswork.
BREAKER FINDER EFFICIENCY - Audible beeper signals voltage presence and helps you pinpoint the correct breaker without multiple trips.
TRUSTED PROFESSIONAL GRADE - Fluke’s industry-leading quality and certifications (CE, UL) guarantee reliable performance every time.

The Fluke ST120+ GFCI Socket Tester combines bright LED indicators, an integrated GFCI test button, and a high-pitched audible beeper to quickly verify outlet wiring and breaker status. Its compact, rugged design is built for professionals who demand accuracy and efficiency on every job, backed by trusted certifications and a 4.8-star rating from over 1,600 users.

Specifications

ASIN	B0B3VCZ4XK
Best Sellers Rank	383,622 in DIY & Tools ( See Top 100 in DIY & Tools ) 437 in Circuit Testers
Brand	Fluke
Colour	Yellow
Customer Reviews	4.8 4.8 out of 5 stars (1,690)
Included Components	Outlet Tester
Item Dimensions	5.8 x 7.4 x 2.5 centimetres
Item Weight	0.07 Kilograms
Manufacturer	Fluke
Manufacturer Part Number	ST120+
Model Number	ST120+
Number of Items	1
Number of Packs	1
Power Source	Battery Powered
Specification Met	CE, UL
Style Name	Modern
UPC	195112033586

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