How do you charge it? Battery operated?

The ST120 is powered by the 120V receptacle that it's plugged into.

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⚡ Test smarter, work safer — never miss a miswire!

COMPACT DURABLE - Lightweight 82g design fits in your pocket and withstands tough jobsite conditions.
CERTIFIED RELIABILITY - Meets CE, CSA, IEC, and UL standards for trusted, professional-grade performance.
NO BATTERIES REQUIRED - Powered directly from the outlet, ensuring zero downtime and hassle-free operation.
INSTANT WIRING DIAGNOSIS - Bright LEDs provide clear, immediate identification of miswired outlets, saving you time on every job.
BUILT IN GFCI SAFETY TEST - Integrated test button lets you verify GFCI trip function on the spot—no extra tools needed.

The Fluke ST120 GFCI Socket Tester is a compact, rugged tool designed for quick and accurate outlet testing. Featuring bright LEDs for easy wiring diagnostics and an integrated GFCI test button, it ensures your outlets are wired correctly and GFCI-protected. Battery-free and certified to top safety standards, it’s the essential tester for electricians and home pros who demand reliability on every job.

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Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

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.

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Manufacturer	Coolfell
Part Number	ST120
Product Dimensions	5.79 x 7.37 x 2.49 cm; 82 g
Item model number	ST120
Size	1212ADS405RE418
Colour	1212ADS405RE418
Style	1212ADS405RE418
Material	1212ADS405RE418
Power Source	Outlet
Item Package Quantity	1
Measurement Accuracy	+/-0.5%
Certification	CE, CSA, IEC 61010-1:2000-1, UL
Included Components	Outlet Tester
Batteries Required?	No
Item Weight	82 g

Fluke ST120 GFCI Socket Tester Without Beeper

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