CAT IV 600 V; Cat III 690 V safety rating Fluke"s family of Two-Pole Voltage testers comply with both regulation HSE GS 38 (tip caps) and IEC EN 61243-3: 2010. Switchable load: avoid display of ghost voltages allowing you to draw more current from the circuit under test and avoid trip residual-current devices (RCDs) Improved probe docking for secure storage. Single-pole phase test offers fast identification of live conductors. 4 ways to detect ac/dc voltage A clear; instantly visible LED indicator; a bright digital display of the measurement value; an audible continuity test; and vibration to give tactile feedback Backlit graduated scale and backlit indicators Low battery indicator Dual insulated cable tested to 3x the required bend angle provides increased reliability and durability.