Clear, patented all-round LED display In accordance with DIN EN 61243-3:2010 and CAT III With practical torch for measuring point illumination Including RC trigger function and vibrating load buttons With the testo 750-2 voltage tester you can test electrical systems and equipment reliably and easily for voltage or de-energization thanks to the all-round LED display and unique fibre-optic technology. Compared to the testo 750-1, it is also suitable for single pole voltage testing to determine quickly whether conductors are live.