Screwdriver indicator is an essential tool, which, along with pliers and hammer, should be in any house and apartment. There are different types of voltage testers - neon, LED and digital multimeter. This tool can also be used as car battery tester; therefore it is the right thing for car owners.The body of the circuit testerThe plastic body of the volt stick is ergonomically shaped and conveniently lies in hand. Also, a special clip is attached to the body of the tester, with which it is convenient to attach the tester to the pocket, lapel or other parts of the overall.