STI-61-038 ESD Kit for common ground point and Circuit Tester for use on 120 VAC circuits. Features Check Plus label for easy-to-read results. Made with premium neon lamps, they prevent false readings. The anti-static ground tester is used to test for correct wiring, open ground, reverse polarity, open hot, open neutral, hot on neutral, and hot and ground reversed with open hot in 3 wire, 120 VAC circuits. Our fault detector features A unique static-prevention system uses a hard ground of electrical system to drain static charges Check the ground circuit for any common ground faults bright neon light provides visual proof of grounding, and a wrist strap with a stainless steel backplate and conductive fiber provides maximum absorption of static charges. The best thing is that it is very easy to plug in a banana plug terminated wriststrap. Also, the anti-static ground tester provides proper grounding and stops new charges from amassing on the wearer. That is why our ESD wrist strap tester is widely used in electronic manufacturing, medical devices, data centers, technical labs, aerospace, and automotive. The fault detector keeps the professionals safe and allows them to carry out the task safely and confidently.