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Digital Socket Tester AC Voltage Polarity Phase Circuit Check

43 reviews
100% of buyers enjoyed this product! 1963 orders
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1. Plug and play, easy to operate.
2. The interface is clear and clear at a glance.
3. Small size, portable.
4. One-second detection, sensitive response, eliminate potential safety hazards.
5. RCD (Residual Current Device) function test.

●Operating voltage:48-250V/45-65Hz
●Measure voltage (with LCD):48-250V/45-65Hz accuracy: ±(2.0%+2)
●Operating temperature:0°C~40°C
●Operating Humidity:20%-75% RH
●Storage temperature:-10°C~50°C
●Storage Humidity:20%-80% RH
●RCD test: >30mA (EU/UK Plug)
●RCD working voltage:220V+20V
●GFCI test: >5mA (US Plug)
●GFCI working voltage:110V±20V
●Note: RCD and GFCI functions do not coexist

Package includes:
1*Socket Tester
1*User Manual


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
  • If you received the wrong item you can request a refund or a reshipment.
  • If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

We do not issue the refund if:

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of Amazmerch (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

43 reviews
100% of buyers enjoyed this product!
5 stars
4 stars
3 stars
2 stars
1 star
verifed buyer
14 Mar 2023

Works perfect, nice for the price

verifed buyer
12 Mar 2023

Very wonderful... ..

verifed buyer
11 Mar 2023

Great tool for checking the power grid!

verifed buyer
10 Mar 2023

Used this to install new outlet, nice to have the readings too

verifed buyer
7 Mar 2023

Being able to see the voltage

verifed buyer
7 Mar 2023

Seller committed to perfect service, even when the error and customer. Congratulations

verifed buyer
4 Mar 2023

Bought to check the correct installation of sockets for grounding and correct connection. The device is working.

verifed buyer
28 Feb 2023

Started wiring at home and this is a must have to check correct wiring.

verifed buyer
24 Feb 2023

Works like a charm. I tried this device is circuits I knew were wired improperly and it shows the correct result every time.

verifed buyer
21 Feb 2023

️Works as stated, makes checking outlets quick and easy.

verifed buyer
18 Feb 2023

Received quickly. In accordance with the description. Very convenient to test its electrical outlets.

verifed buyer
8 Feb 2023

Excellent product! Perfectly detects, effective!

verifed buyer
7 Feb 2023

Works excellent. I tried the trip by differential and it works well. Excellent tester

verifed buyer
6 Feb 2023

very nice product, i like it ... thank you store

verifed buyer
25 Jan 2023


verifed buyer
19 Jan 2023

Totally amazed with this tester. First let me say it came super fast and as described. At first I was a little concerned because the price was low. So it arrived today and I went straight to testing it. as a licensed electrician I had my doubts. So I plugged it into my house outlets. Knowing my outlets were wired correctly it did exactly what I should expect and tested correctly. Even shows the volts in a digital display. Now I went to my garage and on my bench tester I was able to create a situation that was incorrect wiring. And sure enough this tester caught each wiring issue I could throw at it. Also I do like how its constructed. It's small and fits right into my tool pouch. And also fits into my tool box nicely. For the price you cant beat it. And I've purchased mistakes in the past but this seems to be one of those wins. So if your on the fence about purchasing this item dont be. Buy it now while you can and while the price is still low.

verifed buyer
18 Jan 2023

It is small and works perfectly. This is the smallest socket tester that has tons of features in it. I definitely need to look at the manual to understand and see what those LED lights mean. It's very compact and fit right in my palm. It's easy to carry around with me. I did couple drop tests and it’s still working fine. It's very stable for a little guy. It has a lot more features than just test to see if socket is live or not. The LCD screen is definitely the biggest winner here. The second best thing is that it can do GFCI test as well. It's simple to use once I get used to it. There are labels on the tester itself so I don’t need to carry the manual with me all the times.

verifed buyer
18 Jan 2023

Does the job, works

verifed buyer
18 Jan 2023

fast delivery, recommend store, good product. thanks

verifed buyer
12 Jan 2023

I am not an electrician by any means. just needed a gadget to check if an outlet works. This guy has numbers and a colored display. Beats looking at LEDs.

verifed buyer
11 Jan 2023

Multimeters have their place, but they're fiddly to use and it takes time to diagnose multiple outlets in a row. This thing? If you just need to quickly find a faulty outlet, or get quick info, it's your tool. Plug it in, look at the lights, move on to the next outlet on the circuit.

verifed buyer
11 Jan 2023

Worked as intented to identify a GFI fault in a brand new house. Easy to use and you do need a minor understanding of electrical circuits to figure out what the different test modes are showing on the meter.

verifed buyer
10 Jan 2023

Great product, I will take more. Store, product and store recommend%!

verifed buyer
10 Jan 2023


verifed buyer
9 Jan 2023

This was perfect for my needs to check outlets in my old house!

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