With its 2 mA test current, the KEW 4105A enables earth resistance testing without inadvertently activating earth‑leakage protection devices. Its circuit design minimizes the influence of spike resistance and earth voltage, ensuring smoother readings. The instrument also includes overload protection: it tolerates brief AC overvoltages, safeguarding against inadvertent electrical expos... https://tools.com.bd/product/kyoritsu-4105a-digital-earth-tester