Conductivity Test Pen, Grounding Tester, Continuity Tester for Grounding Mats, Sheets, Pads, Blankets, Pillow Cases. Use to Test Effectiveness of Earth Connected Products.

I live in UK. I bought this pen to check my grounding fitted sheet it works really well and easy to use. It gave me reassurance that it is still working well

Bought for testing a grounding mat, works well

I was able to walk with bad knees without any discomfort alter sleeping on the mattress for only one week. My mattress did not come with this particular tester, and I wanted to rule out any chance of a placebo effect. Placebo would have worked for me, but the tester is too easy to use, it is compact and the price was right.

Worked exactly as described.

Worked great to test my sheets to see if they need replacing. I have mine plugged into the yard. The sheet snap and lines near the snap lit up but no lights on the majority of sheets. So I know it’s works, it’s just old.

Seems to work effectively.

Thank you. The pen worked very well. Not at the beginning,, but with persistence it started to work. Disappointing results with my grounding mat, though. I have not felt any effects after using it for several weeks.