---
product_id: 452913215
title: "ST120+"
brand: "fluke"
price: "182 zł"
currency: PLN
in_stock: null
reviews_count: 8
url: https://www.desertcart.pl/products/452913215-st120
store_origin: PL
region: Poland
---

# Bright LED Indicators GFCI Test Button Compact & Rugged Design ST120+

**Brand:** fluke
**Price:** 182 zł
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Test with Confidence: Your Safety Companion!

## Quick Answers

- **What is this?** ST120+ by fluke
- **How much does it cost?** 182 zł with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/452913215-st120)

## Best For

- fluke enthusiasts

## Why This Product

- Trusted fluke brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **🔒 Safety First:** Essential tool for electricians and DIY enthusiasts alike.
- • **🔊 Audible Alerts:** Beeper feature saves time by confirming breaker status.
- • **⚡ Quick Miswire Detection:** Bright LEDs provide instant feedback on outlet status.
- • **🧰 Built for Professionals:** Compact design fits easily in your toolkit for on-the-go testing.
- • **🔍 Verify GFCI Functionality:** Integrated test button ensures safety and compliance.

## Overview

The Fluke ST120+ GFCI Socket Tester is a professional-grade tool designed to ensure the safety and functionality of GFCI outlets. With an integrated test button, bright LED indicators, and an audible beeper, this compact and rugged tester is perfect for electricians and DIY enthusiasts who need reliable performance on every job.

## Description

"The ST120+ Socket Tester with a GFCI test button and beeper from Fluke is the perfect tester for electricians and electrical inspectors, home inspectors and technicians who need to verify the correct wiring of outlets. The bright, easy to see LEDs let you know if an outlet is miswired and the integrated GFCI test button gives you peace of mind by allowing you to verify the proper operation of GFCI equipped outlets. The addition of a switchable beeper makes the ST120+ even more capable. In addition to providing an additional level of safety by beeping whenever voltage is present – even with a miswired outlet – the beeper also helps you save time identifying circuit breakers. Just plug in the tester into an outlet and make sure the beeper is switched on. Then, when you flip the corresponding circuit breaker for that outlet, the beeper will turn on or off, letting you know that you found the right breaker. These features packed into the compact yet rugged design of the ST120+ make this the perfect tester to take to every job".

## Features

- Integrated GFCI test button to verify the correct operation of GFCI equipped outlets
- Bright LEDs for fast, easy identification of miswired outlets
- Compact, rugged design for use at every job
- Eliminate multiple trips back and forth by using the beeper to help identify if breaker is switched on or off

## Product Details

- **Brand:** Fluke
- **Power Source:** Corded Electric
- **Style:** SOCKET TESTER WITH LEDS, GFCI TEST, BEEPER
- **Color:** yellow
- **Item Weight:** 0.07 Kilograms

## Images

![ST120+ - Image 1](https://m.media-amazon.com/images/I/816n049-GKL.jpg)

## Questions & Answers

**Q: 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.**
A: 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.

**Q: Can I attach a 3 prong adapter to my 2 prong outlet then test with this device?**
A: 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.

**Q: Does this fluke st120+ gfci socket tester come with a standard warranty, e.g. 12 or 24 months?**
A: This model has a 2 year warranty.

**Q: is there  a case**
A: Yes

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable, Audible, and Worth Every Penny
*by J***Y on July 12, 2025*

As an electrician who often works alone, the Fluke ST120+ GFCI Socket Tester with Audible Beeper has become an essential tool in my bag. The audible beeper is a game-changer—especially when I'm troubleshooting or trying to shut off a circuit and the panel is out of sight but within earshot. Being able to hear the tester respond saves me time and steps, and the sound can be turned off when not needed.It’s built with the quality you expect from Fluke, and while it’s a little pricier than some other GFCI testers, the reliability and added features are more than worth the cost. I’ll continue to repurchase this tester and highly recommend it to anyone in the trade.

### ⭐⭐⭐⭐⭐ RandomU
*by R***U on September 11, 2025*

A good tool and fair price. My PC was turned off recently often. I was curious if it is because of the outlet settings.

### ⭐⭐⭐⭐⭐ Convenient and Necessary Tool for DYI Work
*by T***N on June 24, 2025*

It is very convenient to test my outlets. I have been installing some GCFI outlets, and this helped me to verify if my installation was correct. All of my testing tools are from Fluke, very trustworthy brand.

## Frequently Bought Together

- Fluke ST120+ GFCI Socket Tester with Audible Beeper
- Fluke 1AC II VoltAlert Non-Contact Voltage Tester, Pocket-Sized, 90-1000V AC, Audible Beeper, 2 Year Warranty, CAT IV Rating, Packaging May Vary
- RLSOCO Carrying Case for Fluke ST120+/ST120 GFCI Socket Tester (Case Only)

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**Shop now:** [https://www.desertcart.pl/products/452913215-st120](https://www.desertcart.pl/products/452913215-st120)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-12*