Conductivity Testing Pen – Grounding Mat & Sheet Tester

Quickly verify whether your grounding mat, earthing sheet, pillowcase, wristband, or any other earthing product is truly conductive — all in just one second. The Conductivity Testing Pen is a simple, battery-powered tool that forms a complete electronic circuit when its two probes touch a conductive surface, lighting up an indicator to confirm successful conductivity and grounding continuity.

Made in Mainland China.

Why You Need This Tester

Not all grounding products are created equal. Even when plugged into a grounded socket, a non-conductive or defective earthing product will fail to establish a proper ground connection. This compact pen takes the guesswork out — place both probes on the surface of your grounding product and the LED indicator tells you instantly whether conductivity is present.

Key Features

• Instant Conductivity Check: Results in 1 second — no complicated setup required.
• Versatile Compatibility: Works with grounding mats, earthing bed sheets, pillowcases, wristbands, and more.
• No Socket Required for Testing: The product being tested does not need to be plugged into a socket during the conductivity check.
• Includes 3 LR41 Button Batteries: Ready to use straight out of the box — batteries are pre-installed.
• Easy Battery Replacement: Simply remove the foot pad and top cover to swap in fresh batteries when needed.
• Lightweight & Portable: Compact 124 × 18 mm pen-style design fits easily in a drawer or travel bag.
• Safe & Simple: Not intended for testing live wires or electrical equipment — designed exclusively for conductivity testing of earthing products.

Specifications

What's in the Box

• 1 × Conductivity Testing Pen (batteries included)

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For general guidance on electrical safety in the home, visit the U.S. Consumer Product Safety Commission – Electrical Safety.

Learn more: Continuity tester

Frequently Asked Questions

Q: How does the conductivity testing pen work?

A: The pen has two probes. When both probes are placed on a conductive surface — such as a grounding mat or earthing sheet — they complete an electronic circuit, causing the built-in LED indicator to light up. If the light does not turn on, the material is not conductive and may not be providing an effective ground connection.

Q: Do I need to plug my grounding mat into a socket to test it?

A: No. The conductivity testing pen checks the conductivity of the material itself, so your earthing product does not need to be plugged into a socket during the test. In fact, if a product is non-conductive, plugging it into a grounded socket will have no effect regardless.

Q: Can I use this pen to test electrical outlets or live wires?

A: No — this tester is designed exclusively for checking the conductivity of earthing products like grounding mats, sheets, and wristbands. It must never be used to touch live wires, electrical outlets, or powered equipment, and it is not suitable for children under 8 years old.

Q: How do I replace the batteries?

A: The pen uses 3 × LR41 button cell batteries, which are included and pre-installed. When the batteries are depleted, simply remove the foot pad and top cover of the pen to access the battery compartment and insert replacement batteries.