Color:yellow Grounding and Conductivity Test Kit: This grounding test kit includes a conductivity test pen and a grounding tester. Both tools are easy to use, plug and play, and feature clear indicator lights to let users know the test status. All tools are made of safe and non-toxic materials and designed for long-term use, ensuring continued effectiveness after repeated tests. Conductivity Test Pen: The conductivity test pen's primary function is to check whether the material of a grounded product is conductive. To use, place the test pen's two copper probes on the product's conductive material. If the indicator light illuminates, the product is conductive. This test pen only tests conductivity and cannot verify whether the grounding wire is properly connected. Grounding Tester: The grounding tester earthing is used to check whether an electrical outlet is properly grounded. Simply plug the tester into the outlet, and an indicator light automatically displays the wiring status. If there is a wiring problem or the outlet is not grounded, the indicator light will alert the user. This tool is ideal for use at home, in the office, or anywhere else where grounding verification is necessary. Note: When using a conductivity tester, please note that it is only designed to test the conductivity of grounded products and cannot detect whether the ground wire is properly connected. Even if the ground wire is not connected, the tester may still light up, indicating that the product itself is conductive. conductivity tester is only used to check whether the outlet is properly grounded and should not be used for other electrical tests. For safety reasons, keep the tester out of the reach of children. Compatible Products: This ground tester kit is compatible with a variety of grounding products, including grounding mats, grounding strips, grounding wrist straps, grounding rugs, grounding pillowcases, and more.