The Desco Low Resistance Tester has three selectable test ranges to check resistance paths: <1 ohm, <2 ohms and <10 ohms. Per ANSI/ESD S20.20, the required limit for equipment grounding conductors (such as banana jacks) is <1 ohm tested per ESD TR53. Per ANSI/ESD S20.20, the required limit for solder hand tools is <2 ohms (Product Qualification) and <10 ohms Compliance Verification tested per ESD TR53. The Low Resistance Tester is equipped with pass/fail (go/no go) audio and visual indicators that activate to confirm that the grounding conductor being tested meets the required limit. The low battery indicator lets the operator know when battery needs to be replaced.