The product shown is a Duoyi DY4100 Digital Earth Tester, a device used for measuring the ground resistance of electrical systems. Measurement Range: Accurately measures ground resistance up to \(2000\Omega \) across ranges of 20, 200, and \(2000\Omega \). Earth Voltage: Capable of measuring earth voltage up to \(30V\). Features: Includes data hold functionality and a low battery warning indicator. Included Accessories: Typically comes with auxiliary earth bars and testing wires.