GAYA Conductivity Tester for Grounding Products – Instant Result, Easy to Use Conductivity Tester for Earthing Mats, Sheets & Wristbands – Portable & Reliable Ground Earthing Test – Battery Included

Works well as advertised.

I chose the GAYA Conductivity Tester for Grounding Products – Instant Result, Easy to Use Conductivity Tester for Earthing Mats, Sheets & Wristbands – Portable & Reliable Ground Earthing Test to see if the grounding mats I got for my dogs are working. What I thought this tool would do (because another one of these was also included with a grounding sheet I got) is tell me if the material is grounded and functioning properly. Why would one of these be included with my sheet if not to show me the grounding is working?! Clearly, I did not read and understand fully before ordering because the product description does state this is the case. To me, the product description I copied and pasted from the listing above indicates that this tool would tell me if the items were grounded.When I used the tester is when I realized something wasn't quite right. When properly positioned on the sheet, the light would go on both when the grounding sheet was plugged in and when it wasn't. The same thing happened with the dog mat. That is when I went back to the product page and read some of the reviews and then back to the product description. The reviews better explained what I was missing-this tool does not test the grounding, and the instruction card is so small I think the font is size -15.5 so that wasn't much help. I freely and fully admit that my disappointing experience with this product is due to my ignorance so am giving it 5 stars still.

According to some reviews, it seems that people are a little confused about what this tool does. It will test the conductivity of your grounding mat/sheets/wristbands/pillows, etc....but, it will not tell you if the outlet you are plugging them into is grounded. You have to test that separately with an outlet tester and/or multimeter. If the outlet is not grounded properly, then the conductivity of your mat will not test correctly. That being said...this tester pen works great for what it is intended and is very handy to do periodic tests. It comes with batteries and ready to use right out of the box. As far as coming with directions, as others have mentioned...it comes with a small card (and I mean small, since you'll need a magnifying glass to read the tiny print) with brief directions on use and care. But no directions on how to change the batteries...so that is my only complaint.

I have two grounding mats and I was curious if they actually worked. I tested both of them and one would light up almost everytime I touched it with this pen, the other one I couldn’t get to light up at all. So this helped me decide which one to use! It does feel a little cheap and there weren’t really instructions on what to do with it, so I took off one star. But I do feel that it does what it’s supposed to do.

This is such a great (and needed) item to have when you use grounding items like mats, socks, sheets, etc., to allow you to verify that the item is, in fact, grounding. All that's required is to touch the grounding item (for instance, the surface of the grounding mat) with the probe end of the conductivity tester, and if the item is grounded and therefore working correctly, the other end of the conductivity tester will light up with a red light. If the light doesn't come on, the grounding item is not working. Couldn't get easier! Since I have several items for grounding (and a couple of young cats who occasionally like to chew on small cords) I like to use this item periodically just to make sure my cords are operating as they should. Great item!

The wording made me believe this was going to come with everything I need for me to be able to test my grounding mat to confirm if it's actually grounded and working properly. Once I received the item, I noticed there were no instructions, as others also mentioned. It just mentions some brief specifications that don't include how to actually use it. I also noticed that in very tiny print, it says that it will NOT test for a ground but only tests connectivity, despite the images (including pictures of grounding mats) on the product page, and wording on the product page making me believe this would allow me to know if my grounding mat works.Upon closer inspection, it seems like you need to purchase another item with it in order to fully find out if your grounding mat works. Without the other item, this does not confirm whether or not your grounding mat works.I'm not sure what I'd use this for on its own, since there are no instructions with it. I don't even know what it does by itself at this point. Very confusing all around and I'd have to say it's probably not a good value for the money since it doesn't seem to do anything. It's supposed to light up at some point, but I haven't even been able to get it to light up when placing it near or on various items, etc... so it may also be defective.

This conductivity tester does not work well because the metal contacts that you touch to the surface of whatever is being tested are loose. They wiggle around and the only way to get the device to work is by pressing hard on the surface. The quality is extremely poor and the cap is difficult to remove from end.